| antipollution | (adjective) intended to reduce pollution | - |
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| billion | (adjective) denoting a quantity consisting of one thousand million items or units in the United States | - |
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| (adjective) denoting a quantity consisting of one million million items or units in Great Britain | - |
| boon | (adjective) very close and convivial | - |
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| carnation | (adjective) pink or pinkish | - |
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| champion | (adjective) holding first place in a contest | Synonyms: prizewinning |
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| clarion | (adjective) loud and clear | - |
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| common | (adjective) having no special distinction or quality; widely known or commonly encountered; average or ordinary or usual | - |
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| (adjective) belonging to or participated in by a community as a whole; public | - |
| (adjective) commonly encountered | Synonyms: usual |
| (adjective) of low or inferior quality or value | Synonyms: coarse |
| (adjective) being or characteristic of or appropriate to everyday language | Synonyms: vernacular, vulgar |
| (adjective) of or associated with the great masses of people | Synonyms: plebeian, unwashed, vulgar |
| (adjective) to be expected; standard | - |
| (adjective) common to or shared by two or more parties | Synonyms: mutual |
| (adjective) lacking refinement or cultivation or taste | Synonyms: coarse, rough-cut, uncouth, vulgar |
| cresson | (adjective) of a moderate yellow-green color that is greener and deeper than moss green and yellower and darker than pea green | Synonyms: cress green, watercress |
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| crimson | (adjective) characterized by violence or bloodshed | Synonyms: red, violent |
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| (adjective) of a color at the end of the color spectrum (next to orange); resembling the color of blood or cherries or tomatoes or rubies | Synonyms: blood-red, carmine, cerise, cherry-red, cherry, red, reddish, ruby-red, ruby, ruddy, scarlet |
| (adjective) (especially of the face) reddened or suffused with or as if with blood from emotion or exertion | Synonyms: flushed, red-faced, red, reddened |
| ebon | (adjective) of a very dark black | Synonyms: ebony |
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| halcyon | (adjective) marked by peace and prosperity | Synonyms: golden, prosperous |
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| (adjective) idyllically calm and peaceful; suggesting happy tranquillity | - |
| imitation | (adjective) not genuine or real; being an imitation of the genuine article | Synonyms: fake, false, faux, simulated |
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| iron | (adjective) extremely robust | Synonyms: cast-iron |
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| legion | (adjective) amounting to a large indefinite number | Synonyms: numerous |
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| maroon | (adjective) of dark brownish to purplish red | Synonyms: brownish-red |
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| million | (adjective) (in Roman numerals, M written with a macron over it) denoting a quantity consisting of 1,000,000 items or units | - |
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| nonprescription | (adjective) purchasable without a doctor's prescription | Synonyms: over-the-counter |
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| nonunion | (adjective) not belonging to or not allowing affiliation with a trade union | - |
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| on | (adjective) in operation or operational | - |
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| (adjective) (of events) planned or scheduled | - |
| poltroon | (adjective) characterized by complete cowardliness | - |
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| prescription | (adjective) available only with a doctor's written prescription | - |
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| regulation | (adjective) prescribed by or according to regulation | - |
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| salmon | (adjective) of orange tinged with pink | Synonyms: pink-orange, pinkish-orange |
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| tatterdemalion | (adjective) worn to shreds; or wearing torn or ragged clothing | Synonyms: tattered |
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| (adjective) in deplorable condition | Synonyms: bedraggled, broken-down, derelict, dilapidated, ramshackle, tumble-down |
| trillion | (adjective) one million million in the United States | - |
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| (adjective) one quintillion in Great Britain | - |
| uncommon | (adjective) not common or ordinarily encountered; unusually great in amount or remarkable in character or kind | - |
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| (adjective) marked by an uncommon quality; especially superlative or extreme of its kind | Synonyms: rare |
| union | (adjective) of trade unions | - |
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| vermilion | (adjective) of a vivid red to reddish-orange color | Synonyms: Chinese-red, cinnabar, vermillion |
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| vermillion | (adjective) of a vivid red to reddish-orange color | Synonyms: Chinese-red, cinnabar, vermilion |
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| wanton | (adjective) casual and unrestrained in sexual behavior | Synonyms: easy, light, loose, promiscuous, sluttish |
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| (adjective) occurring without motivation or provocation | Synonyms: motiveless, unprovoked |
| won | (adjective) not subject to defeat | - |
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| yon | (adjective) distant but within sight (`yon' is dialectal) | Synonyms: yonder |
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| zillion | (adjective) very large indeterminate number | - |
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