Definition of informal in US English:



  • 1Having a relaxed, friendly, or unofficial style, manner, or nature.

    ‘an informal atmosphere’
    ‘an informal agreement between the two companies’
    • ‘I generally spent most of what I had on used records, then lent them to friends in informal return for their holdings.’
    • ‘The twins were delighted with the atmosphere and the informal nature of the celebrations.’
    • ‘The atmosphere is relaxed, informal and friendly.’
    • ‘Many people dislike his informal style of leadership.’
    • ‘Part of the appeal of tutoring is the informal nature of the job and the casual, friendly relationship it allows tutors and faculty members to develop.’
    • ‘We immediately relaxed into the restaurant's friendly, informal atmosphere.’
    • ‘A lot of what makes weblogs interesting is their personal, ephemeral, and informal nature.’
    • ‘Refreshments were provided and enjoyed by all in a relaxed and informal atmosphere.’
    • ‘But more people were coming into Yorkshire on business and on informal holidays, visiting friends and relatives.’
    • ‘It is an army establishment and although run on military lines the atmosphere is easy, informal and friendly.’
    • ‘It's a friendly, informal place, and easy to relax in.’
    • ‘This will be an informal gathering of friends and neighbours and all who would like to come along are invited to do so.’
    • ‘He is undoubtedly a purist, but he writes from the heart in an informal style that welcomes the reader as a close friend.’
    • ‘Be prepared to share a table as the idea here is to create an informal and easy going atmosphere.’
    • ‘Last night I attended the informal opening of a friend's bar on 2nd Avenue.’
    • ‘The building will be open to everyone, the atmosphere will be friendly, inclusive and informal.’
    • ‘Consequently it has a very informal style, spilling down a hillside on the Atlantic coast with sections divided between limestone boulders.’
    • ‘The service throughout was extremely friendly and the informal atmosphere was enhanced by the fact that we felt we could have sat there all afternoon if we had wanted to.’
    • ‘She wins a £100 prize for the photograph that judges decided best summed up the friendly and informal atmosphere of the event.’
    • ‘That kind of thing helps create the friendly, informal atmosphere that makes the blogosphere so much fun to be a part of.’
    casual, relaxed, easy-going, natural, unceremonious, unofficial, non-formal, unstudied, unaffected
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    1. 1.1 Of or denoting a style of writing or conversational speech characterized by simple grammatical structures, familiar vocabulary, and use of idioms, e.g., tu in French.
      • ‘These languages are not merely a set of informal gestures, nor are they a signed version of any particular spoken language.’
      • ‘They speak English in formal discourse or political discussions and shift to Patois in informal conversation and gossip.’
      • ‘It is helped by market research showing that the British public is starting to like the Liverpool accent again; it sounds friendly and informal.’
      • ‘The content of websites can be written in formal as well as informal language.’
      • ‘Idiomatic usages are usually colloquial and informal, more or less obvious figurative extensions of ordinary uses.’
      • ‘A small percentage of the students admit that sometimes both they and their parents speak an informal language variety at home.’
      • ‘It is not unusual for Coloreds to combine the two languages in a distinctive, informal local dialect.’
      • ‘It should feel like an informal conversation between people with the same goals, all trying to explore and surface good thinking.’
      • ‘This involved brief informal conversations with the women about their attitudes regarding the men who pass by their windows.’
      • ‘Stories are shared through the media, seminars, and classes and during informal conversations in the workplace.’
      • ‘No matter how serious minded the intention behind the blog, the Internet forces the writer into shortened, informal style.’
      • ‘The blend of formal and informal language suits the school's mission and vision perfectly.’
      • ‘This function of informal language will generate terms and labels that differ from official usage in several ways.’
      • ‘Iago is particularly clever at varying his language across the formal / informal register to suit his listeners.’
      • ‘It is apparent that the writing style is simple and informal.’
      • ‘And what about informal and formal names for living things?’
      • ‘Within months, the discussions turned from informal to formal.’
      • ‘Heritage language learners often speak informal dialects and/or registers of their respective languages.’
      • ‘There is considerable lexical borrowing and linguistic code switching in informal conversation.’
      • ‘I was completely entranced listening to their informal conversation and subsequent business discussion, sitting there with a stupid smile on my face.’
      colloquial, vernacular, idiomatic, demotic, non-standard, popular, dialectal, non-literary
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    2. 1.2 (of dress) casual; suitable for everyday wear.
      • ‘Some people were wearing suits while a few others were in informal clothing.’
      • ‘Dress in class is informal, although men should consider a tie for more formal occasions.’
      • ‘Many locals dress in period costume to set the tone for the afternoon, but the dress code is informal, so no one needs to feel pressured.’
      • ‘She now wore a low-cut pink top that flirted with the school's informal dress code.’
      • ‘Dress is informal and music will be provided by the Brose Walsh Band.’
      • ‘So if you don't have that much time left before you wedding, an informal dress could be a good choice.’
      • ‘We asked them to be fairly informal in their dress and not to carry clip boards or briefcases but to carry the questionnaires around in plastic bags.’
      • ‘He liked jazz, preferred informal dress, didn't much care for hunting and shooting, and was openly contemptuous of red carpets.’
      • ‘Cate nodded and slipped out of her informal dress that she had worn all day.’
      • ‘Fernandes' informal wear had that wily old politician and general Fidel Ramos envious.’
      • ‘Most performers wear the informal street clothes of a 26-year-old garage mechanic.’
      • ‘This identified him as a doctor, yet he wore simple, informal clothes.’
      • ‘It was more like a dress jacket with black pants because he had leaned towards the informal side and wasn't wearing a tie or a vest.’
      • ‘The Croydon Symphony Orchestra was at work in informal dress; in shirt-sleeves, jeans and other casual clothes.’
      • ‘Tickets are now available priced at £20 and 30 euro and the dress code is informal.’
      • ‘Remember however that most reservation only dining restaurants require formal or informal dress attire as well.’
      casual, relaxed, comfortable, everyday, sloppy, leisure
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