THESAURUS
Prose
banality, bromide, causerie, chat, chestnut, chin, cliche, commonplace, commonplace expression, corn, expository writing, familiar tune, hackneyed saying, in prose, language, lieu commun, locus communis, matter of fact, matter-of-fact, matter-of-factness, nonmetrical, nonpoetic, old joke, old saw, old song, old story, plain, plainness, platitude, platitudinize, prosaic, prosaicism, prosaicness, prosaism, prosiness, prosing, prosy, rap, reiteration, retold story, stereotyped saying, talk, text, trite saying, triticism, twice-told tale, unimaginative, unimaginativeness, unimpassioned, unversified, write prose, yarn
ROGET THESAURUS
Prose
Diffuseness
VB
be diffuse, run out on, descant, expatiate, enlarge, dilate, amplify, expand, inflate, launch out, branch out, rant, maunder, prose, harp upon, dwell on, insist upon, digress, ramble, battre la campagne, beat about the bush, perorate, spin a long yarn, protract, spin out, swell out, draw out, battologize.
Loquacity
VB
be loquacious, talk glibly, pour forth, patter, prate, palaver, prose, chatter, prattle, clack, jabber, jaw, blather, blatter, blether, rattle, rattle on, twaddle, twattle, babble, gabble, outtalk, talk oneself out of breath, talk oneself hoarse, expatiate, gossip, din in the ears, talk at random, talk nonsense, be hoarse with talking.
Prose
N
prose, prose writer, prosaicism, prosaism, prosaist, proser, prosal, prosy, prosaic, unpoetic, unpoetical, rhymeless, unrhymed, in prose, not in verse.
VB
prose, write prose, write in prose.
Dullness
N
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.
VB
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).