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Synonyms

casual

American  
[kazh-oo-uhl] / ˈkæʒ u əl /

adjective

  1. happening by chance; fortuitous.

    a casual meeting.

    Synonyms:
    incidental, unexpected
    Antonyms:
    planned
  2. without definite or serious intention; careless or offhand; passing.

    a casual remark.

  3. appropriate for wear or use on informal occasions; not dressy.

    casual clothes; casual wear.

  4. seeming or tending to be indifferent to what is happening; relaxed; nonchalant.

    a casual, unconcerned air.

  5. without emotional intimacy or commitment.

    casual sex.

  6. irregular; occasional.

    a casual visitor.

    Synonyms:
    unpredictable, unconcerned, indifferent, apathetic, unceremonious, informal
    Antonyms:
    serious, formal, concerned
  7. accidental.

    a casual mishap.

  8. noting or relating to activities that do not require much skill or time commitment.

    casual gamers.

  9. Obsolete. uncertain.


noun

  1. a worker employed only irregularly.

  2. a soldier temporarily at a station or other place of duty, and usually en route to another station.

  3. Usually casuals an article of clothing for casual wear.

  4. a person who does something only occasionally.

    Most of our customers are casuals.

  5. Usually Disparaging. a person who plays video games that do not require much skill or time commitment.

casual British  
/ ˈkæʒjʊəl /

adjective

  1. happening by accident or chance

    a casual meeting

  2. offhand; not premeditated

    a casual remark

  3. shallow or superficial

    a casual affair

  4. being or seeming unconcerned or apathetic

    he assumed a casual attitude

  5. (esp of dress) for informal wear

    a casual coat

  6. occasional or irregular

    casual visits

    a casual labourer

  7. biology another term for adventive

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. (usually plural) an informal article of clothing or footwear

  2. an occasional worker

  3. biology another term for an adventive

  4. (usually plural) a young man dressed in expensive casual clothes who goes to football matches in order to start fights

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Related Words

See accidental.

Other Word Forms

Etymology

Origin of casual

First recorded in 1325–75; Middle English, from Latin cāsuālis, equivalent to cāsus case 1 + -ālis -al 1; replacing Middle English casuel, from Middle French, from Latin as above

Explanation

Something casual is ordinary or everyday — not too special, unusual, fancy, serious, or eventful. You might have a casual conversation with your classmates before homeroom, or attend a casual backyard barbecue. If you're going to your friend's house for a dinner of pizza and soda, you could describe the evening as a casual night at home. Formal attire might mean tuxedos and evening gowns, but casual clothing is the kind of clothing you wear every day, for ordinary activities. If you treat a person or a subject in a casual way, you're not paying close attention or treating them as special. And you might remind your siblings to act casual on the day of your mom's surprise birthday party so that they don't ruin the surprise.

Keep Reading on Vocabulary.com

Vocabulary lists containing casual

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

At other times, she has worn leather jackets, "clothing that is both strong in impression and casual" which would be suitable for visiting "relatively rough or rugged locations" such as military bases, noted Cheong.

From BBC • May 5, 2026

When I got walked onto the floor, I saw a bunch of people in casual wear yelling and screaming, and they were rich or whatever, and I was just like, oh, this is the vibe.

From The Wall Street Journal • Apr. 29, 2026

Chicago Cubs standout Pete Crow-Armstrong says comments he made about Dodgers fans were about casual fans who don’t take baseball seriously.

From Los Angeles Times • Apr. 29, 2026

Only Valerie and those who get an intimate look can see the casual savagery in Warhol’s practice.

From Salon • Apr. 29, 2026

Instead, they walked two abreast along the sidewalk, not bunching up but keeping a wide space between pairs, as though they were out for a casual afternoon stroll.

From "Because They Marched" by Russell Freedman