adj. 25B6; adjective SILLY, foolish, stupid, inane, idiotic, vacuous, asinine; pointless, senseless, ridiculous, ludicrous, absurd; informal dumb, gormless; Brit. informal daft.
sensible.
FATUOUS
Meaning of FATUOUS in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012