vapidity

dullness, heaviness, flatness; infestivity, stupidity [more]; want of originality; dearth of ideas., prose, matter of fact; heavy book, conte a dormir debout; platitude.

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.

dull, dull as ditch water; unentertaining, uninteresting, unlively, logy [U.S.]; unimaginative; insulse; dry as dust; prosy, prosing, prosaic; matter of fact, commonplace, pointless; "weary stale flat and unprofitable" [Hamlet]., stupid, slow, flat, humdrum, monotonous; melancholic; stolid; plodding.

flatness; smoothness., plane; level; plate, platter, table, tablet, slab.

render flat, flatten; level.

flat, plane, even, flush, scutiform, discoid; level (horizontal); flat as a pancake, flat as a fluke, flat as a flounder, flat as a board, flat as my hand.

insipidity, blandness; tastelessness

be tasteless.

void of taste; insipid; tasteless, gustless, savorless; ingustible, mawkish, milk and water, weak, stale, flat, vapid, fade, wishy-washy, mild; untasted.