Costume vs Suits

When to use each in English, with meaning, register, and examples.

Costume

Top 2,000 (common)B1noun

Suits

FormalTop 2,000 (common)
Most formal: Suits
 CostumeSuits
Pronunciation🇬🇧 /["/ˈkɒstjuːm/"]/🇺🇸 /["/ˈkɑːstuːm/"]/🇬🇧 //suːts//🇺🇸 //suːts//
MeaningAn outfit worn for a particular occasion, often for parties or performances.A set of clothes that consists of a jacket and trousers.
ExampleShe wore a vibrant costume for the Halloween party.He wore a sharp suit to the job interview.
RegisterNeutralFormal
How commonTop 2,000 (common)Top 2,000 (common)
CEFR levelB1-
Part of speechnoun
Collocationsfull, colourful/​colorful, elaborate, be dressed in, dress in, have on, design, designer, drama, in costume, full, colourful/​colorful, elaborate, be dressed in, dress in, have on, design, designer, drama, in costumetailored suits, business suits, wear a suit, suit and tie, formal suits
Antonymsnudity, plainnessdismantles, removes
Common mistakesConfused with 'custom', meaning a practice or habit., Using 'costume' for regular clothes instead of special outfits.Confusing 'suit' as a single item with 'suits' as plural., Using 'suit' incorrectly in informal contexts., Mispronouncing the word as 'soots'.
Usage notesUse 'costume' when referring to clothing for events like Halloween or theatrical performances. Avoid using it in formal contexts not related to dress or play.Used to describe formal attire, especially in business contexts. Less common in casual conversation.

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Suits

Frequently asked questions: Costume vs Suits

What's the difference between Costume and Suits?

Costume: An outfit worn for a particular occasion, often for parties or performances. Suits: A set of clothes that consists of a jacket and trousers.

Which is more formal: Costume and Suits?

Suits is the most formal of these.

Can you show an example of each?

Costume: She wore a vibrant costume for the Halloween party. Suits: He wore a sharp suit to the job interview.

Can I use Costume and Suits interchangeably?

Not always. Costume and Suits are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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