dim

Not bright or colorful.

The lighting was too dim for me to make out his facial features.

Đồng nghĩa: dull, dingy

(colloquial)Not smart or intelligent.

He may be a bit dim, but he's not entirely stupid.

Đồng nghĩa: addlebrained, addlepated, airheaded, bee-brained, beef-witted, beefheaded, beetle-headed, birdbrained, blockheaded, Boeotian, boneheaded, boofheaded, braindead, brainless, bubbleheaded, buffle-headed, bullet-headed, cerebrally challenged, childish, chowderheaded, chuckleheaded, crackbrained, cretinous, daft, dense, dented, dim-bulb, dim-headed, dim-witted, dim, doltish, dopey, dozy, drowsy, dull-headed, dull-minded, dull-witted, dull, dumber than a box of rocks, dumb, dunderheaded, empty-headed, fatheaded, feeble-minded, flea-brained, foolish, fuzzy-headed, fuzzy-minded, goofy, half-brained, half-witted, hammer-headed, idiotic, ignorant, imbecilic, inane, insipid, intellectually challenged, knuckleheaded, lamebrained, lowbrow, lumpish, lunkheaded, mentally challenged, mentally retarded, mindless, monosynaptic, moronic, muttonheaded, nitwitted, numbskulled, oafish, obtuse, peabrained, pratty, pudding-headed, puerile, purblind, quarter-witted, retarded, ridiculous, rockheaded, sharp as a bowling ball, sheep-headed, silly, simple, slow, slow on the uptake, slow-witted, smooth-brained, stolid, stupid, thick-skulled, thickheaded, thickwitted, thick, unapprehensive, unclever, uninformed, unintelligent, unsmart, vacant, vacuous, witless, wooden-headed, wool-headed, woolly-headed, woolly-minded, dumb as a bag of hammers, dumb as a box of rocks, dumb as a doorknob, dumb as an ox, dumb as a post, dumb as a sack of hammers, dumb as dirt, dumber than a rock, not the sharpest crayon in the box, not the sharpest knife in the drawer, not the sharpest tool in the shed, thick as a brick, thick as a plank, thick as champ, thick as mince, thick as two short planks, thick as a whale omelette, ass-brained, fuckwitted, shit-for-brains, thick as pig shit

Indistinct, hazy or unclear.

His vision grew dimmer as he aged.

Đồng nghĩa: dim, fuzzy, hazy, ill-defined, ill-marked, indefinite, indistinct, indistinguishable, muzzy, obscure, undefined, vague

Disapproving, unfavorable: rarely used outside the phrase take a dim view of.

Đồng nghĩa: deprecative, improbatory, reprobative, reprobatory

(abbreviation, alt of, clipping, not comparable)(music) Clipping of diminished.

(archaic, uncountable)Dimness.

(abbreviation, alt of)(grammar) Abbreviation of diminutive.

(transitive)To make something less bright.

He dimmed the lights and put on soft music.

(intransitive)To become darker.

The lights dimmed briefly when the air conditioning was turned on.

To render dim, obscure, or dark; to make less bright or distinct.

To deprive of distinct vision; to hinder from seeing clearly, either by dazzling or clouding the eyes; to darken the senses or understanding of.

(figuratively)(figurative) To diminish, dull, or curtail.

All these setbacks had started to dim the hopes of the students.

Nothing will dim their spirit of resilience.

A glut might dim the outlook for grain futures.

(abbreviation, alt of, no superlative)(musical notation) Abbreviation of diminuendo.