imbecilic

listen to the pronunciation of imbecilic
Английский Язык - Турецкий язык
embesil
Английский Язык - Английский Язык
like or as an imbecile; so senseless as to be laughable; absurd, foolish, harebrained, idiotic
{s} of or pertaining to an imbecile (Psychology); dumb, foolish, silly, ridiculous
having a mental age of three to seven years