中文翻译与英英解释

adj.
1.非正式的，简略的。
2.不拘礼节[形式]的；口语的。
短语和例子
an informal visit 非正式访问。 informal proceedings 简略手续。 an informal style (日常使用的)语体。
adv.
-ly

not formal; "conservative people unaccustomed to informal dress"; "an informal free-and-easy manner"; "an informal gathering of friends"

used of spoken and written language

having or fostering a warm or friendly and informal atmosphere; "had a cozy chat"; "a relaxed informal manner"; "an intimate cocktail lounge"; "the small room was cozy and intimate"
同义词：cozy, intimate,

not officially recognized or controlled; "an informal agreement"; "a loose organization of the local farmers"
同义词：loose,

例句与用法

He proposed a series of informal meetings .
他建议举行一系列非正式会议。

Meet my wife susan ( an informal style of introduction ) .
见见我妻子苏珊（非正式介绍）。

Formal organizations create additional informal organizations .
正式组织可产生附带的非正式的组织。

" push " is informal and is used for the selling of illegal drugs .
“Push”是口语用法，指出售违禁毒品。

The borderline between informal language and slang is hard to define .
口语和俚语之间的分界线是很难确定的。

The colloquial words is a word or expression often used in informal speech .
俗语是在非正式讲话时常用的字或措辞。

Unless it is a black-tie occasion, make the invitation informal in tone .
如果不是隆重的场合，邀请要用非正式的语气。

Before long the informal organization will catch on to the new work flow .
不用多久，非正式的组织将适应新的工作流程。

The president invited him into his private study for an informal chat .
总统邀请他到他私人书房里进行一次非正式的会谈。

" kind of " and " sort of " are used in very informal english as adverbs .
“kindof”和“sortof”在极通俗的口语中可用作副词。