SG Heritage Dictionary

Unmeaningness Roget’s Thesaurus §517

N. meaninglessness, unmeaningness, scrabble, empty sound, dead letter, vox et praeterea nihil, "a tale told by an idiot, full of sound and fury, signifying nothing", "sounding brass and a tinkling cymbal." nonsense, utter nonsense, gibberish, jargon, jabber, mere words, hocus-pocus, fustian, rant, bombast, balderdash, palaver, flummery, verbiage, babble, baverdage, baragouin, platitude, niaiserie, inanity, flap-doodle, rigmarole, rodomontade, truism, nugae canorae, twaddle, twattle, fudge, trash, garbage, humbug, poppy-cock, stuff, stuff and nonsense, bosh, rubbish, moonshine, wish-wash, fiddle-faddle, absurdity, vagueness, boilerplate

V. mean nothing, be unmeaning, twaddle, quibble, scrabble

Adj. unmeaning, meaningless, senseless, nonsensical, void of sense, inexpressive, unexpressive, vacant, not significant, insignificant, trashy, washy, trumpery, trivial, fiddle-faddle, twaddling, quibbling, unmeant, not expressed, tacit, inexpressible, undefinable, incommunicable

Dullness Roget’s Thesaurus §843

N. dullness, heaviness, flatness, infestivity #, stupidity, want of originality, dearth of ideas, prose, matter of fact, heavy book, conte a dormir debout, platitude

V. be dull, prose, take au serieux, be caught napping, render dull, damp, depress, throw cold water on, lay a wet blanket on, fall flat upon the ear, no joke, serious matter (importance) 642

Adj. 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

Phr. davus sum non aedipus, deadly dull and boring, ddb