The meaning of INFORMAL is marked by the absence of formality or ceremony. How to use informal in a sentence.

Informal definition: without formality or ceremony; casual.. See examples of INFORMAL used in a sentence.

INFORMAL meaning: 1. not formal or official: 2. (of clothing, behaviour, speech) suitable when you are with friends…. Learn more.

1. without formality or ceremony; casual: an informal visit. 2. not according to the prescribed, official, or customary way or manner; irregular; unofficial: informal proceedings. 3. suitable to …

Informal speech or behaviour is relaxed and friendly rather than serious, very correct, or official. She is refreshingly informal. His friend was less good-looking, but a lot more informal and …

If something’s informal, it’s casual and relaxed and doesn’t follow any particular rules or conventions, whether that's a style of writing, or the dress code for your dinner party.

Aug 21, 2025 · informal (comparative more informal, superlative most informal) Not formal or ceremonious. quotations an informal get-together