from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Utterly stupid or silly: asinine behavior.
- adj. Of, relating to, or resembling an ass.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Failing to exercise intelligence or judgment; ridiculously below average rationality.
- adj. Of, pertaining to, or characteristic of donkeys.
from the GNU version of the Collaborative International Dictionary of English
- adj. Of or belonging to, or having the qualities of, the ass, as stupidity and obstinacy.
from The Century Dictionary and Cyclopedia
- Belonging to or characteristic of the ass.
- Having the qualities attributed to the ass; stupid; obstinate; obtrusively silly; offensively awkward.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. devoid of intelligence
Latin asinīnus, of an ass, from asinus, ass.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin asinīnus ("of a donkey or ass"). (Wiktionary)