| lackluster | (adjective) lacking luster or shine | Synonyms: lacklustre, lusterless, lustreless |
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| (adjective) lacking brilliance or vitality | Synonyms: lacklustre, lusterless, lustreless |
| lacklustre | (adjective) lacking luster or shine | Synonyms: lackluster, lusterless, lustreless |
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| (adjective) lacking brilliance or vitality | Synonyms: lackluster, lusterless, lustreless |
| lactobacillus | (noun) a Gram-positive rod-shaped bacterium that produces lactic acid (especially in milk) | - |
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| leptocephalus | (noun) slender transparent larva of eels and certain fishes | - |
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| loculus | (noun) a small cavity or space within an organ or in a plant or animal | Synonyms: locule |
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| luscious | (adjective) having strong sexual appeal | Synonyms: juicy, lush, red-hot, toothsome, voluptuous |
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| (adjective) extremely pleasing to the sense of taste | Synonyms: delectable, delicious, pleasant-tasting, scrumptious, toothsome, yummy |
| lusciously | (adverb) so as to produce a delightful taste | Synonyms: deliciously, scrumptiously |
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| lusciousness | (noun) extreme appetizingness | Synonyms: delectability, deliciousness, toothsomeness |
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| lush | (adjective) produced or growing in extreme abundance | Synonyms: exuberant, luxuriant, profuse, riotous |
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| (adjective) tender and full of juice | Synonyms: succulent |
| (adjective) ostentatiously rich and superior in quality | Synonyms: deluxe, gilded, grand, luxurious, opulent, princely, sumptuous |
| (adjective) having strong sexual appeal | Synonyms: juicy, luscious, red-hot, toothsome, voluptuous |
| (noun) a person who drinks alcohol to excess habitually | Synonyms: alcoholic, alky, boozer, dipsomaniac, soaker, souse |
| lushness | (noun) the property of being lush and abundant and a pleasure to the senses | Synonyms: luxuriance, voluptuousness |
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| lust | (noun) self-indulgent sexual desire (personified as one of the deadly sins) | Synonyms: luxuria |
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| (noun) a strong sexual desire | Synonyms: lecherousness, lustfulness |
| (verb) have a craving, appetite, or great desire for | Synonyms: crave, hunger, starve, thirst |
| luster | (noun) a surface coating for ceramics or porcelain | Synonyms: lustre |
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| (noun) a quality that outshines the usual | Synonyms: brilliancy, lustre, splendor, splendour |
| (noun) the visual property of something that shines with reflected light | Synonyms: lustre, sheen, shininess |
| lusterless | (adjective) lacking luster or shine | Synonyms: lackluster, lacklustre, lustreless |
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| (adjective) lacking brilliance or vitality | Synonyms: lackluster, lacklustre, lustreless |
| lusterlessness | (noun) the property of having little or no contrast; lacking highlights or gloss | Synonyms: flatness, lustrelessness, mat, matt, matte |
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| lusterware | (noun) pottery with a metallic sheen produced by adding metallic oxides to the glaze | - |
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| lustful | (adjective) vigorously passionate | Synonyms: concupiscent, lusty |
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| (adjective) characterized by lust | Synonyms: lubricious, prurient, salacious |
| (adjective) driven by lust; preoccupied with or exhibiting lustful desires | Synonyms: lascivious, lewd, libidinous |
| lustfully | (adverb) in a lustful manner | - |
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| lustfulness | (noun) a strong sexual desire | Synonyms: lecherousness, lust |
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| lustily | (adverb) in a healthy manner | - |
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| lustiness | (noun) the property of being strong and healthy in constitution | Synonyms: hardiness, robustness |
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| lustrate | (verb) purify by means of a ritual; also used in post-Communist countries to refer to the political cleansing of former officials | - |
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| lustre | (noun) a surface coating for ceramics or porcelain | Synonyms: luster |
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| (noun) a quality that outshines the usual | Synonyms: brilliancy, luster, splendor, splendour |
| (noun) the visual property of something that shines with reflected light | Synonyms: luster, sheen, shininess |
| lustreless | (adjective) lacking luster or shine | Synonyms: lackluster, lacklustre, lusterless |
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| (adjective) lacking brilliance or vitality | Synonyms: lackluster, lacklustre, lusterless |
| lustrelessness | (noun) the property of having little or no contrast; lacking highlights or gloss | Synonyms: flatness, lusterlessness, mat, matt, matte |
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| lustrous | (adjective) brilliant | - |
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| (adjective) made smooth and bright by or as if by rubbing; reflecting a sheen or glow | Synonyms: bright, burnished, shining, shiny |
| (adjective) reflecting light | Synonyms: glistening, glossy, sheeny, shining, shiny |
| lustrum | (noun) a ceremonial purification of the Roman population every five years following the census | - |
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| (noun) a period lasting five years | - |
| lusty | (adjective) endowed with or exhibiting great bodily or mental health | Synonyms: full-blooded, hearty, red-blooded |
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| (adjective) vigorously passionate | Synonyms: concupiscent, lustful |
| malocclusion | (noun) (dentistry) a condition in which the opposing teeth do not mesh normally | - |
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| microcephalus | (noun) an abnormally small head and underdeveloped brain | Synonyms: microcephaly, nanocephaly |
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| microphallus | (noun) an abnormally small penis | Synonyms: micropenis |
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| modiolus | (noun) the central conical bony pillar of the cochlea | - |
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| modulus | (noun) (physics) a coefficient that expresses how much of a specified property is possessed by a specified substance | - |
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| (noun) the absolute value of a complex number | - |
| (noun) an integer that can be divided without remainder into the difference between two other integers | - |
| mollusc | (noun) invertebrate having a soft unsegmented body usually enclosed in a shell | Synonyms: mollusk, shellfish |
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| molluscum | (noun) any skin disease characterized by soft pulpy nodules | - |
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| mollusk | (noun) invertebrate having a soft unsegmented body usually enclosed in a shell | Synonyms: mollusc, shellfish |
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| musculus | (noun) one of the contractile organs of the body | Synonyms: muscle |
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| nautilus | (noun) cephalopod of the Indian and Pacific oceans having a spiral shell with pale pearly partitions | Synonyms: chambered nautilus, pearly nautilus |
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| (noun) cephalopod mollusk of warm seas whose females have delicate papery spiral shells | Synonyms: Argonaut, Argonauta argo, paper nautilus |
| (noun) a submarine that is propelled by nuclear power | Synonyms: nuclear-powered submarine, nuclear submarine |
| nonplus | (verb) be a mystery or bewildering to | Synonyms: amaze, baffle, beat, bewilder, dumbfound, flummox, get, gravel, mystify, perplex, pose, puzzle, stick, stupefy, vex |
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| nonplused | (adjective) filled with bewilderment | Synonyms: at a loss, nonplussed, puzzled |
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| nonplussed | (adjective) filled with bewilderment | Synonyms: at a loss, nonplused, puzzled |
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| nucellus | (noun) central part of a plant ovule; contains the embryo sac | - |
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| nucleolus | (noun) a small round body of protein in a cell nucleus; such organelles contain RNA and are involved in protein synthesis | Synonyms: nucleole |
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| obolus | (noun) a Greek unit of weight equal to one tenth of a gram | - |
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| occlusion | (noun) the act of blocking | Synonyms: blockage, closure |
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| (noun) an obstruction in a pipe or tube | Synonyms: block, blockage, closure, stop, stoppage |
| (noun) (dentistry) the normal spatial relation of the teeth when the jaws are closed | - |
| (noun) (meteorology) a composite front when colder air surrounds a mass of warm air and forces it aloft | Synonyms: occluded front |
| (noun) closure or blockage (as of a blood vessel) | - |
| occlusive | (adjective) tending to occlude | - |
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| (noun) a consonant produced by stopping the flow of air at some point and suddenly releasing it | Synonyms: plosive, plosive consonant, plosive speech sound, stop, stop consonant |
| ocellus | (noun) an eyelike marking (as on the wings of some butterflies); usually a spot of color inside a ring of another color | Synonyms: eyespot |
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| (noun) an eye having a single lens | Synonyms: simple eye, stemma |
| oculus | (noun) the organ of sight | Synonyms: eye, optic |
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| omphalus | (noun) a scar where the umbilical cord was attached | Synonyms: belly button, bellybutton, navel, omphalos, umbilicus |
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| overplus | (noun) extreme excess | Synonyms: embarrassment, plethora, superfluity |
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| peplus | (noun) a garment worn by women in ancient Greece; cloth caught at the shoulders and draped in folds to the waist | Synonyms: peplos, peplum |
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| phallus | (noun) the male sex organ | Synonyms: member, penis |
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| pilus | (noun) hairlike structure especially on the surface of a cell or microorganism | - |
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| (noun) any of the cylindrical filaments characteristically growing from the epidermis of a mammal | Synonyms: hair |
| plus | (adjective) on the positive side or higher end of a scale | - |
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| (adjective) involving advantage or good | Synonyms: positive |
| (noun) the arithmetic operation of summing; calculating the sum of two or more numbers | Synonyms: addition, summation |
| (noun) a useful or valuable quality | Synonyms: asset |
| plush | (adjective) characterized by extravagance and profusion | Synonyms: lavish, lucullan, plushy |
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| (noun) a fabric with a nap that is longer and softer than velvet | - |
| plushy | (adjective) (of textures) resembling plush | Synonyms: plush-like |
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| (adjective) characterized by extravagance and profusion | Synonyms: lavish, lucullan, plush |
| precalculus | (noun) a college-level algebra and trigonometry course that is designed to prepare students for the study of calculus | Synonyms: precalc |
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| preclusion | (noun) the act of preventing something by anticipating and disposing of it effectively | Synonyms: forestalling, obviation |
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| preclusive | (adjective) made impossible | Synonyms: obviating |
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| prolusion | (noun) exercising in preparation for strenuous activity | Synonyms: tune-up, warm-up |
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| (noun) a short introductory essay preceding the text of a book | Synonyms: foreword, preface |
| prolusory | (adjective) of or relating to or having the character of a prolusion | - |
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| pyrolusite | (noun) a mineral consisting of manganese dioxide; an important source of manganese | - |
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| recluse | (adjective) withdrawn from society; seeking solitude | Synonyms: reclusive, withdrawn |
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| (noun) one who lives in solitude | Synonyms: hermit, solitary, solitudinarian, troglodyte |
| reclusive | (adjective) providing privacy or seclusion | Synonyms: cloistered, secluded, sequestered |
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| (adjective) withdrawn from society; seeking solitude | Synonyms: recluse, withdrawn |
| reclusiveness | (noun) a disposition to prefer seclusion or isolation | - |
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| rivulus | (noun) found in small streams of tropical America; often kept in aquariums; usually hermaphroditic | - |
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| sacculus | (noun) a small sac or pouch (especially the smaller chamber of the membranous labyrinth) | Synonyms: saccule |
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| seclusion | (noun) the act of secluding yourself from others | - |
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| (noun) the quality of being secluded from the presence or view of others | Synonyms: privacy, privateness |
| slush | (noun) partially melted snow | - |
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| (verb) spill or splash copiously or clumsily | Synonyms: slosh, slosh around, slush around |
| (verb) make a splashing sound | Synonyms: slosh, splash, splosh |
| slushy | (adjective) effusively or insincerely emotional | Synonyms: bathetic, drippy, hokey, kitschy, maudlin, mawkish, mushy, sappy, schmaltzy, schmalzy, sentimental, soppy, soupy |
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| (adjective) being or resembling melting snow | - |
| sphacelus | (noun) the localized death of living cells (as from infection or the interruption of blood supply) | Synonyms: gangrene, mortification, necrosis |
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| (noun) necrotic tissue; a mortified or gangrenous part or mass | Synonyms: gangrene, slough |
| stimulus | (noun) any stimulating information or event; acts to arouse action | Synonyms: input, stimulant, stimulation |
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| streptobacillus | (noun) any of various rod-shaped Gram-negative bacteria | - |
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| strobilus | (noun) cone-shaped mass of ovule- or spore-bearing scales or bracts | Synonyms: cone, strobile |
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| stylus | (noun) a pointed tool for writing or drawing or engraving | Synonyms: style |
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| (noun) a sharp pointed device attached to the cartridge of a record player | - |
| surplus | (adjective) more than is needed, desired, or required | Synonyms: excess, extra, redundant, spare, supererogatory, superfluous, supernumerary |
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| (noun) a quantity much larger than is needed | Synonyms: excess, nimiety, surplusage |
| surplusage | (noun) a quantity much larger than is needed | Synonyms: excess, nimiety, surplus |
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| talus | (noun) the bone in the ankle that articulates with the leg bones to form the ankle joint | Synonyms: anklebone, astragal, astragalus |
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| (noun) a sloping mass of loose rocks at the base of a cliff | Synonyms: scree |
| thallus | (noun) a plant body without true stems or roots or leaves or vascular system; characteristic of the thallophytes | - |
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| thiobacillus | (noun) small rod-shaped bacteria living in sewage or soil and oxidizing sulfur | - |
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| tumulus | (noun) (archeology) a heap of earth placed over prehistoric tombs | Synonyms: barrow, burial mound, grave mound |
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| unblushing | (adjective) feeling no shame | Synonyms: shameless |
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| unblushingly | (adverb) without blushing | - |
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| unexclusive | (adjective) not restricted or exclusive | Synonyms: unrestricted |
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| unflustered | (adjective) free from emotional agitation or nervous tension | Synonyms: unflurried, unperturbed, unruffled |
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| utriculus | (noun) a small pouch into which the semicircular canals open | Synonyms: utricle |
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| ventriculus | (noun) thick-walled muscular pouch below the crop in many birds and reptiles for grinding food | Synonyms: gastric mill, gizzard |
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| villus | (noun) a minute hairlike projection on mucous membrane | - |
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| vitellus | (noun) nutritive material of an ovum stored for the nutrition of an embryo (especially the yellow mass of a bird or reptile egg) | Synonyms: yolk |
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| volvulus | (noun) abnormal twisting of the intestines (usually in the area of the ileum or sigmoid colon) resulting in intestinal obstruction | - |
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| wanderlust | (noun) very strong or irresistible impulse to travel | Synonyms: itchy feet |
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