informal的词源

英文词源

informal (adj.)

mid-15c., "lacking form; not in accordance with the rules of formal logic," from in- (1) "not, opposite of" + formal. Meaning "irregular, unofficial" is from c. 1600. Sense of "done without ceremony" is from 1828. Related: Informally.

中文词源

informal：非正式的，随便的

in-,不，非，formal,正式的。即不正式的，随便的。

该词的英语词源请访问趣词词源英文版：informal 词源，informal 含义。