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

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

adj. lacking spirit or liveliness; "a lackadaisical attempt"; "a languid mood"; "a languid wave of the hand"; "a hot languorous afternoon"

adj. psychologically cool and unenthusiastic; unfriendly or unresponsive or showing dislike; "relations were cool and polite"; "a cool reception"; "cool to the idea of higher taxes"

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

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. lacking ardor or vigor or energy; "a spiritless reply to criticism"

adj. having or showing great excitement and interest; "enthusiastic crowds filled the streets"; "an enthusiastic response"; "was enthusiastic about taking ballet lessons"

adj. having strength or power greater than average or expected; "a strong radio signal"; "strong medicine"; "a strong man"

adj. never-ceasing; "the relentless beat of the drums"