(ת') תפל; משעמם

adj. tasteless, insipid; dull, boring

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Adjective
1. lacking taste or flavor or tang; "a bland diet"; "insipid hospital food"; "flavorless supermarket tomatoes"; "vapid beer"; "vapid tea"
(synonym) bland, flat, flavorless, flavourless, insipid, savorless, savourless
(similar) tasteless
2. lacking significance or liveliness or spirit or zest; "a vapid conversation"; "a vapid smile"; "a bunch of vapid schoolgirls"
(similar) unstimulating, unexciting

(a.)
Having lost its life and spirit; dead; spiritless; insipid; flat; dull; unanimated; as, vapid beer; a vapid speech; a vapid state of the blood.
  

Synonyms and related words:
airy, arid, asinine, barren, betwixt and between, blah, bland, blank, bloodless, boring, catchpenny, changeable, characterless, cold, colorless, common, commonplace, dead, dilute, diluted, dismal, draggy, drearisome, dreary, driveling, dry, dryasdust, dull, dusty, effete, elephantine, empty, empty-headed, empty-minded, empty-pated, empty-skulled, etiolated, fade, fair, fair to middling, fairish, fatuous, flat, flavorless, flimsy, foolish, fribble, fribbling, frivolous, frothy, futile, gruelly, halfhearted, heavy, ho-hum, hollow, humdrum, idle, inane, indecisive, indifferent, inexcitable, infirm of purpose, infirm of will, innocuous, insipid, irresolute, jejune, lackluster, leaden, lifeless, light, low-spirited, matter-of-fact, mediocre, medium, middling, mild, milk-and-water, milky, moderate, modest, mundane, mushy, namby-pamby, neutral, nugacious, nugatory, of a kind, of a sort, of sorts, ordinary, otiose, pale, pallid, pappy, passable, pedestrian, plain, plodding, poetryless, pointless, poky, ponderous, prosaic, prosing, prosy, pulpy, rattlebrained, rattleheaded, respectable, sapless, savorless, scatterbrained, shallow, silly, slender, slight, slow, so-so, solemn, spiceless, spiritless, stale, sterile, stiff, stodgy, stuffy, superficial, tame, tasteless, tedious, thin, tiresome, tolerable, trifling, trite, trivial, unembellished, unflavored, unidealistic, unimaginative, unimpassioned, uninteresting, unlively, unpalatable, unpoetic, unromantic, unsavory, vacant, vacuous, vain, washy, watered, watered-down, watery, weak, wearisome, wearying, windy, wishy-washy, wooden