alliterating, alliterative, arid, assonant, automatic, banal, barren, belabored, betwixt and between, blah, blank, bloodless, boresome, boring, broken-record, bromidic, changeless, chanting, characterless, chiming, cliche-ridden, cold, colorless, dead, dingdong, dismal, drab, dragging, draggy, drearisome, dreary, drudging, dry, dryasdust, dull, dusty, effete, elephantine, empty, endless, etiolated, everlasting, exhausting, fade, fair, fair to middling, fairish, fatiguing, flat, gray, harping, heavy, ho-hum, hollow, humdrum, inane, indifferent, inexcitable, insipid, invariable, jejune, jingle-jangle, jog-trot, labored, laborious, lackluster, leaden, lifeless, long-drawn-out, long-winded, low-spirited, mechanical, mediocre, medium, middling, moderate, modest, monotone, monotonous, mortal, namby-pamby, of a kind, of a sort, of sorts, pale, pallid, passable, pedestrian, plodding, pointless, poky, ponderous, prolix, prolonged, prosaic, prosy, repetitious, repetitive, respectable, rhymed, rhyming, routine, same, samely, singsong, slow, so-so, solemn, soporific, spiritless, sterile, stiff, stodgy, stuffy, superficial, tasteless, tiresome, tiring, tolerable, treadmill, unchanging, unending, uneventful, unexciting, uninteresting, unlively, unrelieved, unvarying, vapid, weariful, wearing, wearisome, wearying, wishy-washy, wooden
weariness, defatigation, lassitude, drowsiness, disgust, nausea, loathing, sickness, satiety, taedium vitae, boredom, ennui, wearisomeness, tediousness, dull work, tedium, monotony, twice-told tale, bore, buttonholer, proser, wet blanket, pill, stiff, heavy hours, the enemy (time), wearying, wearing, wearisome, tiresome, irksome, uninteresting, stupid, bald, devoid of interest, dry, monotonous, dull, arid, tedious
, humdrum, mortal, flat, prosy, prosing, slow, soporific, somniferous, disgusting, unenjoyed, weary, tired, drowsy, uninterested, flagging, used up, worn out, blase, life-weary, weary of life, sick of, wearily, usque ad nauseam, time hanging heavily on one's hands, toujours perdrix, crambe repetita.
dullness, heaviness, flatness, infestivity &c, stupidity want of originality, dearth of ideas, prose, matter of fact, heavy book, conte a dormir debout, platitude, dull, dull as ditch water, unentertaining, uninteresting, flat, dry as dust, unfunny, unlively, logy, unimaginative, insulse, dry as dust, prosy, prosing, prosaic, matter of fact, commonplace, pedestrian, pointless, weary stale flat and unprofitable, stupid, slow, flat, insipid, vapid, humdrum, monotonous, melancholic, stolid plodding, boring, tiresome, tedious
, davus sum non Aedipus, deadly dull and boring, DDB.