pošetilý znamená v angličtina

silly [sillier, silliest]▼(foolish, showing a lack of good sense and wisdom)
adjective
[UK: ˈsɪ.li] [US: ˈsɪ.li]

foolish▼(lacking good sense or judgement; unwise)
adjective
[UK: ˈfuː.lɪʃ] [US: ˈfuː.ˌlɪʃ]