adj. 25B6; adjective UNSUITABLE, unfitting, unseemly, unbecoming, unbefitting, improper; incongruous, out of place/keeping, inapposite, inapt; informal out of order; formal malapropos.
suitable.
INAPPROPRIATE
Meaning of INAPPROPRIATE in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012