adjective

informal

informal, casual, unofficial, relaxed

It was an informal meeting.

It was an informal meeting.

He has a very informal style of speaking.

He has a very informal style of speaking.

((...)) not formal or official; relaxed and friendly It was an informal meeting.

Synonyms: casual, relaxed, unofficial; Antonyms: formal, official

From the prefix 'in-' (not) + 'formal'. Literally means 'not formal'.

The prefix 'in-' often means 'not', as in 'inactive' or 'incomplete'. So, 'informal' is simply 'not formal'.

This page is designed for learning support. Please use it as a learning reference, not as a formal reference.