Meaning of informal
Pronunciation: (in-fôr'mul), [key]
- without formality or ceremony; casual: an informal visit.
- not according to the prescribed, official, or customary way or manner; irregular; unofficial: informal proceedings.
- suitable to or characteristic of casual and familiar, but educated, speech or writing.
- characterizing the second singular pronominal or verbal form, or its use, in certain languages:tu in French. the informal
- informal (Thesaurus)