The definition of a colloquialism is a word or expression used in casual language by common people.
An example of a colloquialism is the cliche "Life's short."
- colloquial quality, style, or usage
- a colloquial word or expression
- loosely a localism, or regionalism
- Colloquial style or quality.
- A colloquial expression.
- A colloquial word or phrase; a common spoken expression, often regional.
colloquial + -ism