Словарь синонимов английского языка - informal

(adj) 1. unceremonious, casual, natural, unstilted, familiar, ordinary, everyday, unaffected, unassuming, unpretentious, simple, relaxed, free, free and easy, Brit common or garden, US garden-variety: We had an informal dinner in dhe kitchen. 2. unofficial, unconventional, unconstrained, casual, everyday, simple: On duty he wore informal clothes blue jeans and a denim jacket. 3. vernacular, colloquial, simple, unaffected, ordinary, unpretentious, everyday: He uses informal language devoid of scientific jargon.