IPA: /ʌnˈkʌmfərtəbl/
KK: /ʌnˈkʌmfərtəbəl/
Causing a feeling of discomfort or unease, either physically or emotionally.
I felt uncomfortable sitting in the crowded room.
Comparative: more uncomfortable
Superlative: most uncomfortable
Uncomfortable → It is formed from "un-" (meaning not) and "comfortable" (from Latin "comfortare", meaning to strengthen or soothe). The word "uncomfortable" means not providing comfort or ease.
Think of 'not' ('un-') providing 'comfort' — that's why uncomfortable means lacking comfort.