1.  prosaic(s = adj.all) matter-of-fact - not fanciful or imaginative; "local guides describe the history of various places in matter-of-fact tones"; "a prosaic and unimaginative essay"
Derived forms noun prosaicness₁, noun prose₂

2.  prosaic(s = adj.all) earthbound, pedestrian, prosy - lacking wit or imagination; "a pedestrian movie plot"
Derived forms noun prosaicness₁, noun prose₂

3.  prosaic(s = adj.all) commonplace, humdrum, unglamorous, unglamourous - not challenging; dull and lacking excitement; "an unglamorous job greasing engines"
Derived forms noun prosaicness₁, noun prose₂

1.  Of or pertaining to prose; resembling prose; in the form of prose; unpoetical; writing or using prose; as, a prosaic composition. Cudworth. [1913 Webster]

2.  Dull; uninteresting; commonplace; unimaginative; prosy; as, a prosaic person. Ed. Rev. [1913 Webster]

prosaic, adj.
1 like prose, lacking poetic beauty.
2 unromantic; dull; commonplace (took a prosaic view of life).

Derivative:
prosaically adv. prosaicness n.

Etymology:
F prosa{iuml}que or LL prosaicus (as PROSE)

N  feebleness, feeble, bald, tame, meager, jejune, vapid, bland, trashy, lukewarm, cold, frigid, poor, dull, dry, languid, colorless, enervated, proposing, prosy, prosaic, unvaried, monotonous, weak, washy, wishy- washy, sketchy, slight, careless, slovenly, loose, lax (negligent), slipshod, slipslop, inexact, puerile, childish, flatulent, rambling.

N  plainness, simplicity, severity, plain terms, plain English, Saxon English, household words, plain, simple, unornamented, unadorned, unvarnished, homely, homespun, neat, severe, chaste, pure, Saxon, commonplace, matter-of- fact, natural, prosaic, dry, unvaried, monotonous, in plain terms, in plain words, in plain English, in plain common parlance, point-blank.

N  prose, prose writer, prosaicism, prosaism, prosaist, proser, prosal, prosy, prosaic, unpoetic, unpoetical, rhymeless, unrhymed, in prose, not in verse.

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.

N  imbecility folly, want of intelligence &c, want of intellect, shadowness, silliness, foolishness, imbecility, incapacity, vacancy of mind, poverty of intellect, weakness of intellect, clouded perception, poor head, apartments to let, stupidity, stolidity, hebetude, dull understanding, meanest capacity, shortsightedness, incompetence, one's weak side, not one's strong point, bias, infatuation, simplicity, puerility, babyhood, dotage, anility, second childishness, fatuity, idiocy, idiotism, driveling, folly, frivolity, irrationality, trifling, ineptitude, nugacity, inconsistency, lip wisdom, conceit, sophistry, giddiness, eccentricity, extravagance, rashness, act of folly, unintelligent, unintellectual, unreasoning, mindless, witless, reasoningless, brainless, halfbaked, having no head, not bright, inapprehensible, weak headed, addle headed, puzzle headed, blunder headed, muddle headed, muddy headed, pig headed, beetle headed, buffle headed, chuckle headed, mutton headed, maggoty headed, grossheaded, beef headed, fat witted, fat-headed, weak-minded, feeble-minded, dull minded, shallow minded, lack- brained, rattle-brained, rattle headed, half witted, lean witted, short witted, dull witted, blunt-witted, shallow-pated, clod-pated, addle- pated, addle-brained, dim-sighted, short-sighted, thick-skulled, weak in the upper story, shallow, borne, weak, wanting, soft, sappy, spoony, dull, dull as a beetle, stupid, heavy, insulse, obtuse, blunt, stolid, doltish, asinine, inapt, prosaic, hebetudinous, childish, child-like, infantine, infantile, babyish, babish, puerile, anile, simple, old-womanish, fatuous, idiotic, imbecile, driveling, blatant, babbling, vacant, sottish, bewildered, blockish, unteachable Boeotian, Boeotic, bovine, ungifted, undiscerning, unenlightened, unwise, unphilosophical, apish, simious, foolish, silly, senseless, irrational, insensate, nonsensical, inept, maudlin, narrow-minded, bigoted, giddy, rash, eccentric, foolish, unwise, injudicious, improper, unreasonable, without reason, ridiculous, absurd, idiotic, silly, stupid, asinine, ill-imagined, ill-advised, ill-judged, ill-devised, mal entendu, inconsistent, irrational, unphilosophical, extravagant, sleeveless, idle, pointless, useless, inexpedient, frivolous, Davus sum non, a fool's bolt is soon shot clitellae bovi sunt im, fools rush in where angels fear to tread, il n' a ni bouche ni eperon, the bookful blockhead, ignorantly read, to varnish nonsense with the charms of sound.