adj. 25B6; adjective
an uncomfortable chair : PAINFUL, disagreeable, intolerable, unbearable, confining, cramped.
I felt uncomfortable in her presence : UNEASY, awkward, nervous, tense, strained, edgy, restless, embarrassed, troubled, worried, anxious, unquiet, fraught; informal rattled, twitchy; N. Amer. informal discombobulated, antsy.
relaxed.