I think a second look is in order!
See here: (from
http://freethesaurus.net/s.php?q=asinine)
Main Entry: asinine
Synonyms: Boeotian, absurd, airy, apish, batty, beef-brained, beef-witted, befooled, beguiled, besotted, blockish, bovid, bovine, brainless, buffoonish, caprid, caprine, catchpenny, chumpish, cloddish, cockeyed, cowish, cowlike, crass, crazy, credulous, daffy, daft, dazed, deerlike, dense, dizzy, doltish, doting, dullard, dumb, duncical, duncish, empty, equestrian.......