adj. 25B6; adjective EXPRESSIONLESS, impassive, emotionless; inscrutable, unreadable, blank, vacant, glazed, lifeless, deadpan, wooden, stony; poker-faced, straight-faced.
INEXPRESSIVE
Meaning of INEXPRESSIVE in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012