1. lacking spirit or interest; dull: vapid conversation.
2. lacking sharpness or flavor.
< Latin vapidus; akin
va•pid′i•ty, vap′id•ness, n.
1. foolish, voluble talk.
2. to talk foolishly; blither; babble.
[1815–25; alter. of blether, appar. < Old Norse blathra to chatter, blabber]
a bitter or violent criticism or attack; denunciation
[C16: from Latin diatriba learned debate, from Greek diatribē discourse, pastime, from diatribein to while away, from dia- + tribein to rub]