EnglishMerriam-Webster Dictionary
arid, barren, boring, colorless, drab, dreary, drudging, dry, dull, dusty, flat, heavy, ho-hum, humdrum, jading, jejune, leaden, mind-numbing, monotonous, numbing, old, pedantic, pedestrian, ponderous, prosaic, stodgy, stuffy, tame, tedious, tiresome, tiring, undramatic, uninteresting, vapid, wearisome, weary, wearying arid, barren, boring, colorless, drab, dreary, drudging, dry, dull, dusty, flat, heavy, ho-hum, humdrum, jading, jejune, leaden, mind-numbing, monotonous, numbing, old, pedantic, pedestrian, ponderous, prosaic, stodgy, stuffy, tame, tedious, tiresome, tiring, undramatic, uninteresting, vapid, wearisome, weary, wearying 
