adjective

Extremely stupid or foolish.

Lydia ignored his asinine remark

stupid,foolish,pointless,brainless,mindless,senseless,doltish,idiotic,imbecilic,imbecile,insane,lunatic,ridiculous,ludicrous,absurd,preposterous,nonsensical,fatuous,silly,childish,infantile,puerile,immature,juvenile,inane,witless,half-baked,empty-headed,unintelligent,half-witted,slow-witted,weak-minded