adj. 25B6; adjective TACITURN, quiet, unforthcoming, reserved, reticent, laconic, tongue-tied, mute, silent, tight-lipped; guarded, secretive, close, private; distant, remote, aloof, withdrawn, unsociable; informal mum, stand-offish.
talkative.
UNCOMMUNICATIVE
Meaning of UNCOMMUNICATIVE in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012