1. a person who tells small lies or fibs
Usage: informal; often used in a lighthearted or mildly critical way

Examples

• My little brother is such a fibber; he always makes up excuses for why he didn't do his homework.
• Don't be a fibber—just tell me the truth about what happened.
• She's a habitual fibber who can't resist exaggerating stories.
• He called himself a fibber after admitting he had lied about his test score.
• The fibber was caught when his story didn't match what his friend said.