1. (a.) Lacking flavor; without taste or savor; vapid; tasteless; as, insipid drink or food\.

2. (a.) Wanting in spirit, life, or animation; uninteresting; weak; vapid; flat; dull; heavy; as, an insipid woman; an insipid composition.

arid banal bare barren betwixt and between blah bland blank bleached bloodless bromidic changeable characterless clear cold colorless common commonplace dead devoid dilute diluted dismal distasteful draggy drearisome dreary driveling dry dryasdust dull dusty effete elephantine empty etiolated fade fair fair to middling fairish featureless feeble flat flavorless gruelly halfhearted heavy ho-hum hollow humdrum ill-flavored inane indecisive indifferent inexcitable infirm of purpose infirm of will innocuous irresolute jejune lackluster leaden lifeless low-spirited matter-of-fact mediocre medium middling mild milk-and-water milky moderate modest mundane mushy namby-pamby neutral null null and void of a kind of a sort of sorts ordinary pale pallid pappy passable pedestrian plain plodding poetryless pointless poky ponderous prosaic prosing prosy pulpy respectable sapless savorless slight slow so-so soft solemn spiceless spiritless stale sterile stiff stodgy stuffy subdued superficial swashy tame tasteless tedious tenuous thin tiresome tolerable unappetizing unembellished unflavored unidealistic unimaginative unimpassioned uninteresting unlively unpoetic unrelieved unromantic unsavory vacant vacuous vapid void washy watered watered-down waterish watery weak weariful wearisome white wishy-washy with nothing inside without content wooden