| influential | (adjective) having or exercising influence or power | - |
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| infrequent | (adjective) not frequent; not occurring regularly or at short intervals | - |
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| inherent | (adjective) in the nature of something though not readily apparent | Synonyms: implicit in, underlying |
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| (adjective) existing as an essential constituent or characteristic | Synonyms: built-in, constitutional, inbuilt, integral |
| innocent | (adjective) free from evil or guilt | Synonyms: clean-handed, guiltless |
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| (adjective) lacking intent or capacity to injure | Synonyms: innocuous |
| (adjective) lacking in sophistication or worldliness | Synonyms: ingenuous |
| (adjective) completely wanting or lacking | Synonyms: barren, destitute, devoid, free |
| (adjective) (used of things) lacking sense or awareness | - |
| (adjective) not knowledgeable about something specified | Synonyms: unacquainted |
| (adjective) free from sin | Synonyms: impeccant, sinless |
| insentient | (adjective) devoid of feeling and consciousness and animation | Synonyms: insensate |
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| insistent | (adjective) repetitive and persistent | Synonyms: repetitive |
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| (adjective) demanding attention | Synonyms: clamant, crying, exigent, instant |
| insolent | (adjective) marked by casual disrespect | Synonyms: flip, impudent, snotty-nosed |
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| (adjective) unrestrained by convention or propriety | Synonyms: audacious, bald-faced, barefaced, bodacious, brassy, brazen-faced, brazen |
| insolvent | (adjective) unable to meet or discharge financial obligations | - |
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| instrumental | (adjective) relating to or designed for or performed on musical instruments | - |
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| (adjective) serving or acting as a means or aid | Synonyms: implemental, subservient |
| insufficient | (adjective) of a quantity not able to fulfill a need or requirement | Synonyms: deficient |
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| insurgent | (adjective) in opposition to a civil authority or government | Synonyms: seditious, subversive |
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| integumental | (adjective) of or relating to the integument | Synonyms: integumentary |
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| integumentary | (adjective) of or relating to the integument | Synonyms: integumental |
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| intelligent | (adjective) having the capacity for thought and reason especially to a high degree | - |
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| (adjective) endowed with the capacity to reason | Synonyms: reasoning, thinking |
| (adjective) exercising or showing good judgment | Synonyms: healthy, level-headed, levelheaded, sound |
| (adjective) possessing sound knowledge | Synonyms: well-informed |
| intent | (adjective) giving or marked by complete attention to | Synonyms: absorbed, captive, engrossed, enwrapped, rapt, wrapped |
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| intentional | (adjective) done or made or performed with purpose and intent | Synonyms: designed, unintentional |
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| (adjective) characterized by conscious design or purpose | Synonyms: deliberate, knowing |
| intercontinental | (adjective) extending or taking place between or among continents | - |
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| interdepartmental | (adjective) between or among departments | - |
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| interdependent | (adjective) mutually dependent | Synonyms: mutualist, mutually beneficial |
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| intermittent | (adjective) stopping and starting at irregular intervals | - |
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| intradepartmental | (adjective) within a department | - |
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| intransigent | (adjective) impervious to pleas, persuasion, requests, reason | Synonyms: adamant, adamantine, inexorable |
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| intrasentential | (adjective) of or relating to constituents within a sentence | - |
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| intraventricular | (adjective) within the system of ventricles in the brain | - |
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| intumescent | (adjective) abnormally distended especially by fluids or gas | Synonyms: bloated, distended, puffy, swollen, tumescent, tumid, turgid |
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| inventive | (adjective) (used of persons or artifacts) marked by independence and creativity in thought or action | Synonyms: imaginative |
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| iridescent | (adjective) having a play of lustrous rainbow colors | Synonyms: nacreous, opalescent, opaline, pearlescent |
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| (adjective) varying in color when seen in different lights or from different angles | Synonyms: changeable, chatoyant, shot |
| irreverent | (adjective) showing lack of due respect or veneration | - |
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| (adjective) not revering god | Synonyms: godless |
| (adjective) characterized by a lightly pert and exuberant quality | Synonyms: impertinent, pert, saucy |
| isentropic | (adjective) with unchanging entropy; at constant entropy | - |
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| judgmental | (adjective) depending on judgment | - |
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| jumentous | (adjective) smelling strongly like a beast of burden | - |
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| jurisprudential | (adjective) relating to the science or philosophy of law or a system of laws | - |
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| lambent | (adjective) softly bright or radiant | Synonyms: aglow, lucent, luminous |
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| lamentable | (adjective) bad; unfortunate | Synonyms: deplorable, distressing, pitiful, sad, sorry |
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| lamented | (adjective) mourned or grieved for | - |
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| lamenting | (adjective) vocally expressing grief or sorrow or resembling such expression | Synonyms: wailful, wailing |
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| latent | (adjective) (pathology) not presently active | - |
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| (adjective) potentially existing but not presently evident or realized | - |
| lenient | (adjective) characterized by tolerance and mercy | - |
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| (adjective) tolerant or lenient | Synonyms: indulgent, soft |
| (adjective) not strict | Synonyms: easy |
| lenten | (adjective) of or relating to or suitable for Lent | - |
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| lentic | (adjective) of or relating to or living in still waters (as lakes or ponds) | - |
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| lenticular | (adjective) convex on both sides; shaped like a lentil | Synonyms: biconvex, convexo-convex, lentiform |
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| lentiform | (adjective) convex on both sides; shaped like a lentil | Synonyms: biconvex, convexo-convex, lenticular |
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| lentiginose | (adjective) relating to or covered with or resembling freckles | Synonyms: freckled, lentiginous |
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| lentiginous | (adjective) relating to or covered with or resembling freckles | Synonyms: freckled, lentiginose |
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| lentissimo | (adjective) (of tempo) very slow | - |
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| lento | (adjective) (of tempo) slow | - |
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| licentious | (adjective) lacking moral discipline; especially sexually unrestrained | - |
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| liquescent | (adjective) becoming liquid | Synonyms: melting |
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| lucent | (adjective) softly bright or radiant | Synonyms: aglow, lambent, luminous |
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| luculent | (adjective) (of language) transparently clear; easily understandable | Synonyms: crystal clear, limpid, lucid, pellucid, perspicuous |
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| luminescent | (adjective) emitting light not caused by heat | - |
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| magenta | (adjective) of deep purplish red | - |
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| magnificent | (adjective) characterized by grandeur | Synonyms: brilliant, glorious, splendid |
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| magniloquent | (adjective) lofty in style | Synonyms: grandiloquent, tall |
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| malcontent | (adjective) discontented as toward authority | Synonyms: disaffected, ill-affected, rebellious |
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| maleficent | (adjective) harmful or evil in intent or effect | - |
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| malevolent | (adjective) having or exerting a malignant influence | Synonyms: evil, malefic, malign |
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| (adjective) wishing or appearing to wish evil to others; arising from intense ill will or hatred | - |
| matricentric | (adjective) centered upon the mother | - |
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| maxillodental | (adjective) of or relating to the upper jaw and its associated teeth | - |
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| mental | (adjective) involving the mind or an intellectual process | - |
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| (adjective) of or relating to the mind | - |
| (adjective) of or relating to the chin- or liplike structure in insects and certain mollusks | - |
| (adjective) of or relating to the chin or median part of the lower jaw | Synonyms: genial |
| (adjective) affected by a disorder of the mind | - |
| mentholated | (adjective) containing, or impregnated with, menthol | - |
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| mesenteric | (adjective) of or relating to or located in a mesentery | - |
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| metacentric | (adjective) having two equal arms because of the median position of the centromere | - |
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| (adjective) of or relating to the metacenter | - |
| misrepresented | (adjective) having an intended meaning altered or misrepresented | Synonyms: distorted, perverted, twisted |
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| momentaneous | (adjective) lasting for a markedly brief time | Synonyms: fleeting, fugitive, momentary |
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| momentary | (adjective) lasting for a markedly brief time | Synonyms: fleeting, fugitive, momentaneous |
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| momentous | (adjective) of very great significance | - |
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| monovalent | (adjective) having a valence of 1 | Synonyms: univalent |
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| (adjective) containing only one kind of antibody | - |
| monumental | (adjective) relating or belonging to or serving as a monument | - |
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| (adjective) imposing in size or bulk or solidity | Synonyms: massive, monolithic |
| (adjective) of outstanding significance | - |
| mucopurulent | (adjective) containing or composed of mucus and pus | - |
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| multipotent | (adjective) able to many things | - |
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| multivalent | (adjective) used of the association of three or more homologous chromosomes during the first division of meiosis | - |
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| (adjective) having more than one valence, or having a valence of 3 or higher | Synonyms: polyvalent |
| (adjective) having many values, meanings, or appeals | Synonyms: multi-valued |
| munificent | (adjective) very generous | Synonyms: lavish, overgenerous, too-generous, unsparing, unstinted, unstinting |
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| mutafacient | (adjective) capable of inducing mutation (used mainly of intracellular agents) | - |
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| nascent | (adjective) being born or beginning | - |
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| negligent | (adjective) characterized by neglect and undue lack of concern | - |
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| nescient | (adjective) holding that only material phenomena can be known and knowledge of spiritual matters or ultimate causes is impossible | Synonyms: unbelieving |
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| (adjective) uneducated in general; lacking knowledge or sophistication | Synonyms: ignorant, unlearned, unlettered |
| nilpotent | (adjective) equal to zero when raised to a certain power | - |
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| nineteenth | (adjective) coming next after the eighteenth in position | Synonyms: 19th |
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| nocent | (adjective) having a tendency to cause harm | - |
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| noctilucent | (adjective) shining or glowing by night | - |
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| nonabsorbent | (adjective) not capable of absorbing or soaking up (liquids) | Synonyms: nonabsorptive |
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| nonadjacent | (adjective) not adjacent; not next | - |
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| nonadsorbent | (adjective) lacking a capacity to adsorb or cause to accumulate on a surface | Synonyms: nonadsorptive |
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| nonastringent | (adjective) not astringent | - |
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| nonbelligerent | (adjective) not directly at war | - |
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| nonconcentric | (adjective) not having a common center; not concentric | Synonyms: eccentric |
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| noncontentious | (adjective) of persons; not given to controversy | - |
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| nonconvergent | (adjective) (of lines, planes, or surfaces) never meeting or crossing | Synonyms: nonintersecting |
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| noncurrent | (adjective) not current or belonging to the present time | - |
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| noneffervescent | (adjective) not effervescent | - |
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| (adjective) not sparkling | Synonyms: still |
| nonenterprising | (adjective) lacking in enterprise; not bold or venturesome | Synonyms: unenterprising |
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| nonequivalent | (adjective) not equal or interchangeable in value, quantity, or significance | - |
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| nonessential | (adjective) not of prime or central importance | Synonyms: accidental, incidental |
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| nonexistent | (adjective) not having existence or being or actuality | - |
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| nonindulgent | (adjective) characterized by strictness, severity, or restraint | Synonyms: strict |
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| nonjudgmental | (adjective) refraining from making judgments especially ones based on personal opinions or standards | - |
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| nonpurulent | (adjective) not containing pus | - |
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| nonrepresentational | (adjective) of or relating to a style of art in which objects do not resemble those known in physical nature | - |
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| nonrepresentative | (adjective) not standing for something else | Synonyms: unsymbolic |
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