Synonyms to ho hum

arid, barren, blah, blank, bloodless, characterless, cold, colorless, dead, dismal, draggy, drearisome, dreary, dry, dryasdust, dull, dusty, effete, elephantine, empty, etiolated, fade, flat, heavy, hollow, inane, inexcitable, insipid, jejune, leaden, lifeless, low-spirited, pale, pallid, pedestrian, plodding, pointless, poky, ponderous, slow, solemn, spiritless, sterile, stiff, stodgy, stuffy, superficial, tasteless, tedious, unlively, vapid, wooden