| mecopterous | (adjective) of or relating to mecopterans | - |
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| mercurous | (adjective) of or containing mercury | Synonyms: mercuric |
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| monandrous | (adjective) having only one husband at a time | - |
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| monestrous | (adjective) having one estrous cycle per year | Synonyms: monoestrous |
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| monoestrous | (adjective) having one estrous cycle per year | Synonyms: monestrous |
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| monstrous | (adjective) shockingly brutal or cruel | Synonyms: atrocious, flagitious, grievous |
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| (adjective) abnormally large | - |
| (adjective) distorted and unnatural in shape or size; abnormal and hideous | Synonyms: grotesque |
| muciferous | (adjective) containing or secreting mucus | - |
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| multiparous | (adjective) producing more than one offspring at a time | - |
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| murderous | (adjective) characteristic of or capable of or having a tendency toward killing another human being | Synonyms: homicidal |
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| murmurous | (adjective) characterized by soft sounds | Synonyms: rustling, soughing, susurrous |
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| nectariferous | (adjective) possessing nectaries | - |
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| nectarous | (adjective) extremely pleasing to the taste; sweet and fragrant | Synonyms: ambrosial, ambrosian |
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| nitrous | (adjective) of or containing nitrogen | Synonyms: azotic, nitric |
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| nonporous | (adjective) not porous; especially not having vessels that appear as pores | - |
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| numerous | (adjective) amounting to a large indefinite number | Synonyms: legion |
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| obstreperous | (adjective) boisterously and noisily aggressive | - |
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| (adjective) noisily and stubbornly defiant | - |
| odoriferous | (adjective) having a natural fragrance | Synonyms: odorous, perfumed, scented, sweet-scented, sweet-smelling, sweet |
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| (adjective) emitting an odor | Synonyms: odorous |
| odorous | (adjective) having odor or a characteristic odor | - |
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| (adjective) having a natural fragrance | Synonyms: odoriferous, perfumed, scented, sweet-scented, sweet-smelling, sweet |
| (adjective) emitting an odor | Synonyms: odoriferous |
| omnivorous | (adjective) feeding on both plants and animals | - |
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| onerous | (adjective) not easily borne; wearing | Synonyms: burdensome, taxing |
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| ossiferous | (adjective) containing bones (especially fossil bones) | - |
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| overgenerous | (adjective) very generous | Synonyms: lavish, munificent, too-generous, unsparing, unstinted, unstinting |
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| oviparous | (adjective) egg-laying | - |
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| ovoviviparous | (adjective) producing living young from eggs that hatch within the body | - |
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| parous | (adjective) having given birth to one or more viable children | - |
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| pentamerous | (adjective) divided into five parts; specifically, having each floral whorl consist of five (or a multiple of five) members | - |
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| pestiferous | (adjective) causing irritation or annoyance | Synonyms: annoying, bothersome, galling, irritating, nettlesome, pesky, pestering, plaguey, plaguy, teasing, vexatious, vexing |
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| (adjective) likely to spread and cause an epidemic disease | Synonyms: pestilent, pestilential, plaguey |
| (adjective) tending to corrupt or pervert | Synonyms: corruptive, perversive |
| (adjective) contaminated with infecting organisms | Synonyms: dirty |
| petrous | (adjective) (of bone especially the temporal bone) resembling stone in hardness | Synonyms: stonelike |
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| phosphorous | (adjective) containing or characteristic of phosphorus | Synonyms: phosphoric |
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| piscivorous | (adjective) feeding on fishes | - |
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| polyandrous | (adjective) having more than one husband at a time | - |
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| polyestrous | (adjective) having more than one period of estrus per year | Synonyms: polyoestrous |
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| polyoestrous | (adjective) having more than one period of estrus per year | Synonyms: polyestrous |
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| ponderous | (adjective) slow and laborious because of weight | Synonyms: heavy, lumbering |
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| (adjective) having great mass and weight and unwieldiness | - |
| (adjective) labored and dull | - |
| poriferous | (adjective) full of pores or vessels or holes | Synonyms: porous |
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| porous | (adjective) full of pores or vessels or holes | Synonyms: poriferous |
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| (adjective) allowing passage in and out | Synonyms: holey |
| (adjective) able to absorb fluids | - |
| precancerous | (adjective) of or relating to a growth that is not malignant but is likely to become so if not treated | - |
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| preposterous | (adjective) so unreasonable as to invite derision | Synonyms: absurd, cockeyed, derisory, idiotic, laughable, ludicrous, nonsensical, ridiculous |
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| primiparous | (adjective) of or relating to a woman who has given birth only once | - |
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| prosperous | (adjective) marked by peace and prosperity | Synonyms: golden, halcyon |
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| (adjective) presaging or likely to bring good luck or a good outcome | Synonyms: favorable, favourable, golden, lucky |
| (adjective) in fortunate circumstances financially; moderately rich | Synonyms: comfortable, easy, well-fixed, well-heeled, well-off, well-situated, well-to-do |
| (adjective) very lively and profitable | Synonyms: booming, burgeoning, flourishing, palmy, prospering, roaring, thriving |
| rancorous | (adjective) showing deep-seated resentment | - |
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| rapturous | (adjective) feeling great rapture or delight | Synonyms: ecstatic, enraptured, rapt, rhapsodic |
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| rigorous | (adjective) demanding strict attention to rules and procedures | Synonyms: stringent, tight |
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| (adjective) rigidly accurate; allowing no deviation from a standard | Synonyms: strict |
| rivalrous | (adjective) eager to surpass others | Synonyms: emulous |
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| saliferous | (adjective) containing or yielding salt | - |
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| saporous | (adjective) full of flavor | Synonyms: flavorful, flavorous, flavorsome, flavourful, flavourous, flavoursome, sapid |
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| scabrous | (adjective) dealing with salacious or indecent material | - |
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| (adjective) rough to the touch; covered with scales or scurf | Synonyms: lepidote, leprose, scaly, scurfy |
| seminiferous | (adjective) bearing or producing seed or semen | - |
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| serous | (adjective) of or producing or containing serum | - |
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| slanderous | (adjective) (used of statements) harmful and often untrue; tending to discredit or malign | Synonyms: calumniatory, calumnious, defamatory, denigrating, denigrative, denigratory, libellous, libelous |
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| slaughterous | (adjective) accompanied by bloodshed | Synonyms: butcherly, gory, sanguinary, sanguineous |
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| slumberous | (adjective) inclined to or marked by drowsiness | Synonyms: slumbery, slumbrous, somnolent |
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| (adjective) quiet and tranquil | Synonyms: slumbrous |
| slumbrous | (adjective) inclined to or marked by drowsiness | Synonyms: slumberous, slumbery, somnolent |
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| (adjective) quiet and tranquil | Synonyms: slumberous |
| somniferous | (adjective) sleep inducing | Synonyms: hypnagogic, hypnogogic, somnific, soporiferous, soporific |
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| sonorous | (adjective) full and loud and deep | Synonyms: heavy |
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| soporiferous | (adjective) sleep inducing | Synonyms: hypnagogic, hypnogogic, somniferous, somnific, soporific |
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| (adjective) inducing mental lethargy | Synonyms: narcotic, soporific |
| sorcerous | (adjective) possessing or using or characteristic of or appropriate to supernatural powers | Synonyms: charming, magic, magical, witching, wizard, wizardly |
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| splendiferous | (adjective) having great beauty and splendor | Synonyms: glorious, resplendent, splendid |
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| stertorous | (adjective) of breathing having a heavy snoring sound | - |
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| stoloniferous | (adjective) producing stolons | - |
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| stuporous | (adjective) stunned or confused and slow to react (as from blows or drunkenness or exhaustion) | Synonyms: dazed, foggy, groggy, logy |
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| sulfurous | (adjective) of or related to or containing sulfur or derived from sulfur | Synonyms: sulphurous |
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| (adjective) characterized by oppressive heat and humidity | Synonyms: stifling, sulphurous, sultry |
| (adjective) harsh or corrosive in tone | Synonyms: acerb, acerbic, acid, acrid, bitter, blistering, caustic, sulphurous, virulent, vitriolic |
| sulphurous | (adjective) of or related to or containing sulfur or derived from sulfur | Synonyms: sulfurous |
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| (adjective) characterized by oppressive heat and humidity | Synonyms: stifling, sulfurous, sultry |
| (adjective) harsh or corrosive in tone | Synonyms: acerb, acerbic, acid, acrid, bitter, blistering, caustic, sulfurous, virulent, vitriolic |
| susurrous | (adjective) characterized by soft sounds | Synonyms: murmurous, rustling, soughing |
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| tenebrous | (adjective) dark and gloomy | Synonyms: tenebrific, tenebrious |
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| tetramerous | (adjective) having or consisting of four similar parts; tetramerous flowers | - |
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| thunderous | (adjective) loud enough to cause (temporary) hearing loss | Synonyms: deafening, earsplitting, thundery |
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| (adjective) extremely ominous | - |
| timorous | (adjective) timid by nature or revealing timidity | Synonyms: fearful, trepid |
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| torturous | (adjective) extremely painful | Synonyms: agonising, agonizing, excruciating, harrowing, torturesome, torturing |
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| traitorous | (adjective) having the character of, or characteristic of, a traitor | Synonyms: faithless, treasonable, treasonous, unfaithful |
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| treacherous | (adjective) dangerously unstable and unpredictable | Synonyms: unreliable |
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| (adjective) tending to betray; especially having a treacherous character as attributed to the Carthaginians by the Romans | Synonyms: perfidious, punic |
| tuberous | (adjective) of or relating to or resembling a tuber | - |
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| ulcerous | (adjective) having an ulcer or canker | Synonyms: cankerous, ulcerated |
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| umbelliferous | (adjective) relating to or belonging to plants of the family Umbelliferae | - |
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| unadventurous | (adjective) lacking in boldness | - |
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| unchivalrous | (adjective) offensively discourteous | Synonyms: caddish, ungallant |
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| undesirous | (adjective) having or feeling no desire | Synonyms: undesiring |
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| ungenerous | (adjective) lacking in magnanimity | Synonyms: meanspirited |
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| (adjective) unwilling to spend (money, time, resources, etc.) | Synonyms: stingy |
| unglamorous | (adjective) not challenging; dull and lacking excitement | Synonyms: commonplace, humdrum, prosaic, unglamourous |
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| unglamourous | (adjective) not challenging; dull and lacking excitement | Synonyms: commonplace, humdrum, prosaic, unglamorous |
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| unhumorous | (adjective) lacking humor | Synonyms: humorless, humourless |
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| uniparous | (adjective) producing only one offspring at a time | - |
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| valorous | (adjective) having or showing valor | Synonyms: valiant |
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| vaporous | (adjective) filled with vapor | Synonyms: miasmal, miasmic, vapourous |
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| (adjective) resembling or characteristic of vapor | Synonyms: vaporific, vaporish, vapourific, vapourish, vapourous |
| (adjective) so thin as to transmit light | Synonyms: cobwebby, diaphanous, filmy, gauze-like, gauzy, gossamer, see-through, sheer, transparent, vapourous |
| vapourous | (adjective) filled with vapor | Synonyms: miasmal, miasmic, vaporous |
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| (adjective) resembling or characteristic of vapor | Synonyms: vaporific, vaporish, vaporous, vapourific, vapourish |
| (adjective) so thin as to transmit light | Synonyms: cobwebby, diaphanous, filmy, gauze-like, gauzy, gossamer, see-through, sheer, transparent, vaporous |
| venturous | (adjective) disposed to venture or take risks | Synonyms: audacious, daring, venturesome |
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| vigorous | (adjective) characterized by forceful and energetic action or activity | - |
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| (adjective) strong and active physically or mentally | - |
| viviparous | (adjective) producing living young (not eggs) | Synonyms: live-bearing |
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| vociferous | (adjective) conspicuously and offensively loud; given to vehement outcry | Synonyms: blatant, clamant, clamorous, strident |
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| vulturous | (adjective) living by preying on other animals especially by catching living prey | Synonyms: predatory, rapacious, raptorial, ravening, vulturine |
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| wondrous | (adjective) extraordinarily good or great; used especially as intensifiers | Synonyms: fantastic, grand, howling, marvellous, marvelous, phenomenal, rattling, terrific, tremendous, wonderful |
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