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

INFORMAL definition: 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 or characteristic …

Definition of informal adjective from the Oxford Advanced Learner's Dictionary. relaxed and friendly; not following strict rules of how to behave or do something. Discussions are held on an informal basis …

Dec 14, 2025 · informal (Jawi spelling اينفورمل, comparative lebih informal, superlative paling informal) Not formal; informal.

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 relaxed.

Definition of informal. English dictionary and integrated thesaurus for learners, writers, teachers, and students with advanced, intermediate, and beginner levels.

Informal Terms, Linguistics suitable to or characteristic of casual and familiar, but educated, speech or writing. Grammar characterizing the second singular pronominal or verbal form, or its use, in certain …

There are ten meanings listed in OED's entry for the adjective informal, two of which are labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

INFORMAL meaning: 1 : not formal: such as; 2 : having a friendly and relaxed quality