| era | (noun) a period marked by distinctive character or reckoned from a fixed point or event | Synonyms: epoch |
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| (noun) a major division of geological time; an era is usually divided into two or more periods | Synonyms: geological era |
| eradicable | (adjective) able to be eradicated or rooted out | - |
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| eradicate | (verb) kill in large numbers | Synonyms: annihilate, carry off, decimate, eliminate, extinguish, wipe out |
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| (verb) destroy completely, as if down to the roots | Synonyms: exterminate, extirpate, root out, uproot |
| eradication | (noun) the complete destruction of every trace of something | Synonyms: obliteration |
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| eradicator | (noun) someone who exterminates (especially someone whose occupation is the extermination of troublesome rodents and insects) | Synonyms: exterminator, terminator |
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| erasable | (adjective) capable of being effaced | Synonyms: effaceable |
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| erase | (verb) remove from memory or existence | Synonyms: wipe out |
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| (verb) wipe out digitally or magnetically recorded information | Synonyms: delete |
| (verb) remove by or as if by rubbing or erasing | Synonyms: efface, rub out, score out, wipe off |
| eraser | (noun) an implement used to erase something | - |
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| erasure | (noun) deletion by an act of expunging or erasing | Synonyms: expunction, expunging |
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| (noun) a correction made by erasing | - |
| (noun) a surface area where something has been erased | - |
| erbium | (noun) a trivalent metallic element of the rare earth group; occurs with yttrium | Synonyms: atomic number 68, Er |
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| erect | (adjective) upright in position or posture | Synonyms: upright, vertical |
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| (adjective) of sexual organs; stiff and rigid | Synonyms: tumid |
| (verb) construct, build, or erect | Synonyms: put up, raise, rear, set up |
| (verb) cause to rise up | Synonyms: rear |
| erectile | (adjective) capable of being raised to an upright position | - |
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| (adjective) filled with vascular sinuses and capable of becoming distended and rigid as the result of being filled with blood | Synonyms: cavernous |
| erecting | (noun) the act of building or putting up | Synonyms: erection |
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| erection | (noun) the act of building or putting up | Synonyms: erecting |
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| (noun) a structure that has been erected | - |
| (noun) an erect penis | Synonyms: hard-on |
| erectly | (adverb) in a straight-backed manner | Synonyms: straight-backed |
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| erectness | (noun) the property of being upright in posture | Synonyms: uprightness |
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| (noun) position at right angles to the horizon | Synonyms: uprightness, verticality, verticalness |
| eremite | (noun) a Christian recluse | - |
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| eremitic | (adjective) of or relating to or befitting eremites or their practices of hermitic living | Synonyms: eremitical |
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| (adjective) characterized by ascetic solitude | Synonyms: anchoritic, eremitical, hermitic, hermitical |
| eremitical | (adjective) of or relating to or befitting eremites or their practices of hermitic living | Synonyms: eremitic |
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| (adjective) characterized by ascetic solitude | Synonyms: anchoritic, eremitic, hermitic, hermitical |
| eremitism | (noun) monasticism characterized by solitude in which the social dimension of life is sacrificed to the primacy of religious experience | - |
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| erethism | (noun) an abnormally high degree of irritability or sensitivity to stimulation of an organ or body part | - |
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| erg | (noun) a cgs unit of work or energy; the work done by a force of one dyne acting over a distance of one centimeter | - |
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| ergo | (adverb) (used as a sentence connector) therefore or consequently | - |
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| ergocalciferol | (noun) a fat-soluble vitamin that prevents rickets | Synonyms: calciferol, cholecalciferol, D, viosterol, vitamin D |
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| ergodic | (adjective) positive recurrent aperiodic state of stochastic systems; tending in probability to a limiting form that is independent of the initial conditions | - |
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| ergodicity | (noun) an attribute of stochastic systems; generally, a system that tends in probability to a limiting form that is independent of the initial conditions | - |
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| ergometer | (noun) measuring instrument designed to measure power | Synonyms: dynamometer |
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| ergonomic | (adjective) of or relating to ergonomics | - |
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| ergonomics | (noun) the branch of engineering science in which biological science is used to study the relation between workers and their environments | Synonyms: bioengineering, biotechnology |
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| ergonovine | (noun) an alkaloid derived from ergot (trade name Ergotrate Maleate) that is less toxic than ergot; induces muscular contraction of the uterus and is administered after childbirth or abortion | Synonyms: Ergotrate Maleate |
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| ergosterol | (noun) a plant sterol that is converted into vitamin D by ultraviolet radiation | - |
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| ergot | (noun) a fungus that infects various cereal plants forming compact black masses of branching filaments that replace many grains of the plant; source of medicinally important alkaloids and of lysergic acid | Synonyms: Claviceps purpurea |
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| (noun) a plant disease caused by the ergot fungus | - |
| ergotamine | (noun) an alkaloid derived from ergot that is less toxic than ergot; causes constriction of blood vessels and is used to treat migraine | - |
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| ergotic | (adjective) relating to or produced by ergot | - |
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| ergotine | (noun) a powerful astringent alkaloid extracted from ergot as a brown, amorphous, bitter substance, used to produce contraction of the uterus. | - |
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| ergotism | (noun) poisoning by ingestion of ergot-infected grain products; characterized by thirst and diarrhea and nausea and cramping and vomiting and abnormal cardiac rhythms; in severe cases it can cause seizures and gangrene of the limbs | - |
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| ergotropic | (adjective) of or relating to ergotropism | - |
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| ergotropism | (noun) an affinity for work | - |
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| erica | (noun) any plant of the genus Erica | Synonyms: true heath |
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| eringo | (noun) any plant of the genus Eryngium | Synonyms: eryngo |
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| eriogonum | (noun) any plant of the genus Eriogonum with small clustered flowers | - |
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| eriometer | (noun) An instrument for measuring the diameters of minute particles or fibers, from the size of the colored rings produced by the diffraction of the light in which the objects are viewed. | - |
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| eristic | (adjective) given to disputation for its own sake and often employing specious arguments | Synonyms: eristical |
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| (noun) the art of logical disputation (especially if specious) | - |
| (noun) a person who disputes; who is good at or enjoys controversy | Synonyms: controversialist, disputant |
| eristical | (adjective) given to disputation for its own sake and often employing specious arguments | Synonyms: eristic |
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| ermine | (noun) mustelid of Northern Hemisphere in its white winter coat | Synonyms: Mustela erminea, shorttail weasel |
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| (noun) the expensive white fur of the ermine | - |
| ern | (noun) bulky greyish-brown eagle with a short wedge-shaped white tail; of Europe and Greenland | Synonyms: erne, European sea eagle, gray sea eagle, grey sea eagle, Haliatus albicilla, white-tailed sea eagle |
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| erne | (noun) bulky greyish-brown eagle with a short wedge-shaped white tail; of Europe and Greenland | Synonyms: ern, European sea eagle, gray sea eagle, grey sea eagle, Haliatus albicilla, white-tailed sea eagle |
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| erode | (verb) remove soil or rock | Synonyms: eat away, fret |
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| (verb) become ground down or deteriorate | Synonyms: eat at, gnaw, gnaw at, wear away |
| eroded | (adjective) worn away as by water or ice or wind | Synonyms: scoured |
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| eroding | (noun) (geology) the mechanical process of wearing or grinding something down (as by particles washing over it), also figuratively | Synonyms: eating away, erosion, wearing, wearing away |
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| erogenous | (adjective) sensitive to sexual stimulation | - |
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| eros | (noun) a desire for sexual intimacy | Synonyms: concupiscence, physical attraction, sexual desire |
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| erose | (adjective) having an irregularly notched or toothed margin as though gnawed | Synonyms: jagged, jaggy, notched, toothed |
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| erosion | (noun) (geology) the mechanical process of wearing or grinding something down (as by particles washing over it), also figuratively | Synonyms: eating away, eroding, wearing, wearing away |
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| (noun) erosion by chemical action | Synonyms: corroding, corrosion |
| (noun) a gradual decline of something | - |
| (noun) condition in which the earth's surface is worn away by the action of water and wind | - |
| erosive | (adjective) of a substance, especially a strong acid; capable of destroying or eating away by chemical action | Synonyms: caustic, corrosive, mordant, vitriolic |
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| (adjective) wearing away by friction | - |
| erosiveness | (noun) The state or quality of causing or tending to wear away or erode. | - |
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| erotic | (adjective) giving sexual pleasure; sexually arousing | Synonyms: titillating |
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| (noun) an erotic person | - |
| erotica | (noun) creative activity (writing or pictures or films etc.) of no literary or artistic value other than to stimulate sexual desire | Synonyms: porn, porno, pornography, smut |
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| erotically | (adverb) in an erotic manner | - |
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| eroticism | (noun) the arousal of feelings of sexual desire | Synonyms: amativeness, amorousness, erotism, sexiness |
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| (noun) a state of anticipation of sexuality | Synonyms: erotism |
| eroticize | (verb) give erotic character to or make more interesting | Synonyms: sex up |
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| erotism | (noun) the arousal of feelings of sexual desire | Synonyms: amativeness, amorousness, eroticism, sexiness |
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| (noun) a state of anticipation of sexuality | Synonyms: eroticism |
| err | (verb) to make a mistake or be incorrect | Synonyms: mistake, slip |
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| (verb) wander from a direct course or at random | Synonyms: drift, stray |
| errancy | (noun) fallibility as indicated by erring or a tendency to err | - |
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| (noun) (Christianity) holding views that disagree with accepted doctrine; especially disagreement with papal infallibility | - |
| errand | (noun) a short trip that is taken in the performance of a necessary task or mission | - |
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| errant | (adjective) straying from the right course or from accepted standards | - |
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| (adjective) uncontrolled motion that is irregular or unpredictable | - |
| erratic | (adjective) liable to sudden unpredictable change | Synonyms: fickle, mercurial, quicksilver |
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| (adjective) likely to perform unpredictably | Synonyms: temperamental |
| (adjective) having no fixed course | Synonyms: planetary, wandering |
| erratically | (adverb) in an erratic unpredictable manner | Synonyms: unpredictably |
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| erratum | (noun) a mistake in printed matter resulting from mechanical failures of some kind | Synonyms: literal, literal error, misprint, typo, typographical error |
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| errhine | (adjective) causing nasal discharge | - |
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| erring | (adjective) capable of making an error | Synonyms: error-prone |
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| erroneous | (adjective) containing or characterized by error | - |
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| erroneously | (adverb) in a mistaken or erroneous manner | Synonyms: mistakenly |
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| erroneousness | (noun) inadvertent incorrectness | Synonyms: error |
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| error | (noun) a wrong action attributable to bad judgment or ignorance or inattention | Synonyms: fault, mistake |
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| (noun) (baseball) a failure of a defensive player to make an out when normal play would have sufficed | Synonyms: misplay |
| (noun) inadvertent incorrectness | Synonyms: erroneousness |
| (noun) departure from what is ethically acceptable | Synonyms: wrongdoing |
| (noun) a misconception resulting from incorrect information | Synonyms: erroneous belief |
| (noun) part of a statement that is not correct | Synonyms: mistake |
| (noun) (computer science) the occurrence of an incorrect result produced by a computer | Synonyms: computer error |
| errorless | (adjective) free from error | - |
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| ersatz | (adjective) artificial and inferior | Synonyms: substitute |
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| (noun) an artificial or inferior substitute or imitation | - |
| erst | (adverb) at a previous time | Synonyms: at one time, erstwhile, formerly, once |
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| erstwhile | (adjective) belonging to some prior time | Synonyms: former, old, one-time, onetime, quondam, sometime |
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| (adverb) at a previous time | Synonyms: at one time, erst, formerly, once |
| eruct | (verb) expel gas from the stomach | Synonyms: belch, bubble, burp |
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| (verb) eject or send out in large quantities, also metaphorical | Synonyms: spew, spew out |
| eructation | (noun) a reflex that expels gas noisily from the stomach through the mouth | Synonyms: belch, belching, burp, burping |
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| (noun) (of volcanoes) pouring out fumes or lava (or a deposit so formed) | Synonyms: eruption, extravasation |
| erudite | (adjective) having or showing profound knowledge | Synonyms: learned |
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| eruditely | (adverb) with erudition; in an erudite manner | Synonyms: learnedly |
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| eruditeness | (noun) profound scholarly knowledge | Synonyms: encyclopaedism, encyclopedism, erudition, learnedness, learning, scholarship |
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| erudition | (noun) profound scholarly knowledge | Synonyms: encyclopaedism, encyclopedism, eruditeness, learnedness, learning, scholarship |
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| erupt | (verb) become active and spew forth lava and rocks | Synonyms: belch, extravasate |
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| (verb) start abruptly | Synonyms: break out |
| (verb) erupt or intensify suddenly | Synonyms: break open, burst out, flare, flare up, irrupt |
| (verb) become raw or open | Synonyms: break out, recrudesce |
| (verb) break out | Synonyms: break through, come out, push through |
| (verb) appear on the skin | - |
| (verb) force out or release suddenly and often violently something pent up | Synonyms: break, burst |
| (verb) start to burn or burst into flames | Synonyms: catch fire, combust, conflagrate, ignite, take fire |
| eruption | (noun) the sudden occurrence of a violent discharge of steam and volcanic material | Synonyms: volcanic eruption |
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| (noun) a sudden very loud noise | Synonyms: bam, bang, blast, clap |
| (noun) the emergence of a tooth as it breaks through the gum | - |
| (noun) a sudden violent spontaneous occurrence (usually of some undesirable condition) | Synonyms: irruption, outbreak |
| (noun) (of volcanoes) pouring out fumes or lava (or a deposit so formed) | Synonyms: eructation, extravasation |
| (noun) symptom consisting of a breaking out and becoming visible | - |
| eruptive | (adjective) produced by the action of fire or intense heat | Synonyms: igneous |
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| (adjective) producing or characterized by eruptions | - |
| (adjective) actively spewing out lava | - |
| erwinia | (noun) rod-shaped motile bacteria that attack plants | - |
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| eryngo | (noun) any plant of the genus Eryngium | Synonyms: eringo |
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| erysipelas | (noun) an acute streptococcal infection characterized by deep-red inflammation of the skin and mucous membranes | - |
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| erythema | (noun) abnormal redness of the skin resulting from dilation of blood vessels (as in sunburn or inflammation) | - |
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| erythematous | (adjective) relating to or characterized by erythema | - |
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| erythrina | (noun) any of various shrubs or shrubby trees of the genus Erythrina having trifoliate leaves and racemes of scarlet to coral red flowers and black seeds; cultivated as an ornamental | Synonyms: coral tree |
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| erythrite | (noun) a reddish mineral consisting of hydrated cobalt arsenate in monoclinic crystalline form and used in coloring glass; usually found in veins bearing cobalt and arsenic | Synonyms: cobalt bloom |
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| erythroblast | (noun) a nucleated cell in bone marrow from which red blood cells develop | - |
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| erythroblastosis | (noun) a blood disease characterized by the abnormal presence of erythroblasts in the blood | - |
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| erythrocyte | (noun) a mature blood cell that contains hemoglobin to carry oxygen to the bodily tissues; a biconcave disc that has no nucleus | Synonyms: RBC, red blood cell |
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| erythrocytolysin | (noun) any substance that can cause lysis (destruction) of erythrocytes (red blood cells) and the release of their hemoglobin | Synonyms: erythrolysin, haemolysin, hemolysin |
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| erythroderma | (noun) any skin disorder involving abnormal redness | - |
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