adjective Etymology: French and Late Latin; French insipide, from Late Latin insipidus, from Latin in- + sapidus savory, from sapere to taste — more at sage 1. lacking taste or savor; tasteless Example: insipid food 2. lacking in qualities that interest, stimulate, or challenge; dull, flat Example: insipid prose • insipidity noun • insipidly adverb Synonyms: 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 Example: an insipid romance with platitudes on every page. vapid suggests a lack of liveliness, force, or spirit Example: an exciting story given a vapid treatment. flat applies to things that have lost their sparkle or zest Example: although well-regarded in its day, the novel now seems flat. jejune suggests a lack of rewarding or satisfying substance Example: a jejune and gassy speech. banal stresses the complete absence of freshness, novelty, or immediacy Example: a banal tale of unrequited love. inane implies a lack of any significant or convincing quality Example: an inane interpretation of the play.