A colloquialism is a word or phrase used in informal conversation rather than in formal writing or speech. It reflects the way people actually talk in everyday situations and varies by region, age, and social group.

Examples include "gonna" for "going to", "y'all" for "you all", and "cool" for "good". Colloquialisms can make dialogue sound natural and authentic, but they are usually avoided in academic or professional writing unless the context calls for them.

Key points

• Informal word or phrase
• Common in everyday speech
• Varies by region and group
• Used for natural dialogue