adj. lacking brilliance or vitality; "a dull lackluster life"; "a lusterless performance"

adj. lacking luster or shine; "staring with lackluster eyes"; "lusterless hair"

adj. slow to learn or understand; lacking intellectual acuity; "so dense he never understands anything I say to him"; "never met anyone quite so dim"; "although dull at classical learning, at mathematics he was uncommonly quick"- Thackeray; "dumb officials make some really dumb decisions"; "he was either normally stupid or being deliberately obtuse"; "worked with the slow students"

adj. lacking animation or excitement or activity; "the party being dead we left early"; "it was a lifeless party until she arrived"

adj. so lacking in interest as to cause mental weariness; "a boring evening with uninteresting people"; "the deadening effect of some routine tasks"; "a dull play"; "his competent but dull performance"; "a ho-hum speaker who couldn't capture their attention"; "what an irksome task the writing of long letters is"- Edmund Burke; "tedious days on the train"; "the tiresome chirping of a cricket"- Mark Twain; "other people's dreams are dreadfully wearisome"

adj. poor to middling in quality; "there have been good and mediocre and bad artists"

adj. showing little or no emotion or animation; "a woman who became active rather than apathetic as she grew older"

adj. feeling or showing little interest or enthusiasm; "a halfhearted effort"; "gave only lukewarm support to the candidate"

adj. so lacking in interest as to cause mental weariness; "a boring evening with uninteresting people"; "the deadening effect of some routine tasks"; "a dull play"; "his competent but dull performance"; "a ho-hum speaker who couldn't capture their attention"; "what an irksome task the writing of long letters is"- Edmund Burke; "tedious days on the train"; "the tiresome chirping of a cricket"- Mark Twain; "other people's dreams are dreadfully wearisome"

adj. dull and slow-moving and stolid; like an ox; "showed a bovine apathy"

adj. tediously repetitious or lacking in variety; "a humdrum existence; all work and no play"; "nothing is so monotonous as the sea"

adj. not reflecting light; not glossy; "flat wall paint"; "a photograph with a matte finish"