[in.sip.id] adj [F & LL; F insipide, fr. LL insipidus, fr. L in- + sapidus savory, fr. sapere to taste--more at sage] (1609) 1: lacking taste or savor: tasteless
2: lacking in qualities that interest, stimulate, or challenge: dull, flat -- in.si.pid.i.ty n -- in.sip.id.ly adv syn insipid, vapid, flat, jejune, banal, inane mean devoid of qualities that make for spirit and character. insipid implies a lack of sufficient taste or savor to please or interest "an insipid romance with platitudes on every page". vapid suggests a lack of liveliness, force, or spirit "an exciting story given a vapid treatment". flat applies to things that have lost their sparkle or zest "although well-regarded in its day, the novel now seems flat". jejune suggests a lack of rewarding or satisfying substance "a jejune and gassy speech". banal stresses the complete absence of freshness, novelty, or immediacy "a banal tale of unrequited love". inane implies a lack of any significant or convincing quality "an inane interpretation of the play".