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Informal

/ɪnˈfɔːməl/

Having a relaxed, friendly, or unofficial manner; not adhering to strict rules or formal procedures.

Synonyms:

It will be quite informal.

The meeting was a casual, informal gathering.

Her outfit was more informal than expected.

Derived from the Latin prefix in- meaning not, and formalis meaning pertaining to form or structure. First used in English in the early 19th century.

38 mentions per 1 million words

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