- foolish, unintelligent, or silly; stupid: It is surprising that supposedly intelligent people can make such asinine statements.
- of or like an ass: asinine obstinacy; asinine features.
- obstinate or stupid
- resembling an ass
c.1600, “obstinate, stupid,” from Latin asininus “stupid,” literally “like an ass,” from asinus “ass,” also “dolt, blockhead” (see (n.1)). The literal sense in English is recorded from 1620s.