boring

Synonyms: arid bomb bromidic bummer characterless cloying colorless commonplace dead drab drag drudging dull flat ho hum humdrum insipid interminable irksome lifeless monotonous moth-eaten mundane nothing nowhere platitudinous plebeian prosaic repetitious routine spiritless stale stereotyped stodgy stuffy stupid tame tedious threadbare tiresome tiring trite unexciting uninteresting unvaried vapid wearisome well-worn zero

Antonyms: exciting fascinating interesting