in ‧ for ‧ mal W3 /ɪnˈfɔːm ə l $ -ɔːr-/ BrE AmE adjective
[ Word Family: noun : ↑ formality ≠ ↑ informality , ↑ formalization ; verb : ↑ formalize ; adverb : ↑ formally ≠ ↑ informally ; adjective : ↑ formal ≠ ↑ informal ]
1 . relaxed and friendly without being restricted by rules of correct behaviour OPP formal :
The atmosphere at work is fairly informal.
The two groups met for informal talks.
2 . an informal style of writing or speaking is suitable for ordinary conversations or letters to friends OPP formal
3 . informal clothes are suitable for wearing at home or in ordinary situations SYN casual OPP formal
—informally adverb
—informality /ˌɪnfɔːˈmæləti, ˌɪnfɔːˈmælɪti $ -fɔːr-/ noun [uncountable]