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Cos - Meaning, Definition & English Examples

Cos is a conjunction short for because, commonly used in informal speech and writing. It introduces a reason or explanation, such as in I left early cos I was tired.

cos

/kɑz/ /kɒz/

Definition:

Short for "because," used informally to indicate reason or cause.

Synonyms:

since, as, for

Part of Speech:

conjunction

Antonyms:

despite, although

Common Collocations:

cos I said so, cos it's fun, cos you like it

Derivatives:

'cause, coz

Usage Tips:

Use "cos" in informal contexts; avoid in formal writing—replace with "because."

Common Phrases:

just cos, no reason other than cos, cos why not

Etymology:

Originates from clipped pronunciation of "because," first recorded in the 19th century.

Examples:

  • 1. She left early cos she was tired.
  • 2. I did it cos you asked me to.
  • 3. Cos it's raining, we stayed inside.
  • 4. He smiled cos he was happy.

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