(Informal) Very friendly; intimate:
Part or all of this entry has been imported from the 1913 edition of Webster's Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(used informally) stupid
Find another word for boneheaded. In this page you can discover 9 synonyms, antonyms, idiomatic expressions, and related words for boneheaded, like: blockheaded, duncical, duncish, fatheaded, loggerheaded, thick, thickheaded, thick-skulled and wooden-headed.