Dictionary
asinine
as·i·nine
adjective
extremely stupid or foolish.
"Lydia ignored his asinine remark"
synonyms: stupid, foolish, brainless, mindless, senseless, idiotic, imbecilic, ridiculous, ludicrous, absurd, nonsensical, fatuous, silly, inane, witless, empty-headed; informal halfwitted, dimwitted, dumb, moronic
"an asinine stunt"