relaxed and friendly behaviour or speech that does not follow strict rules of how to behave or do something 不拘礼节的;友好随便的;非正规的 He enjoyed the relative informality of the occasion. 他喜欢这种相对不正式的场合。
a style that does not follow strict rules 非正式性: 不遵循严格规则的风格His early paintings display great informality and lightness of touch. 他早期的绘画表现出极大的随意性和轻松感。