informal

Universal Words adjective 1 relaxed and friendly; not following strict rules of how to behave or do sth: an informal atmosphere * an informal arrangement / meeting / visit * Discussions are held on an informal basis within the department. * The aim of the trip was to make informal contact with potential customers. 2 (of clothes) suitable for wearing at home or when relaxing rather than for a special or an official occasion SYNCASUAL 3 (of language) suitable for normal conversation and writing to friends rather than for serious speech and letters: an informal expression / style compareFORMAL, SLANG informality noun [U] informally adverb: They told me informally (= not officially) that I had got the job. * to dress informally