Used for trivial lies that are often told to avoid hurting someone's feelings or for convenience. When he said he liked her cooking, it was just a fib to avoid upsetting her.
Pro Tip 2/3
Informal Context
Commonly used in casual conversation rather than formal or serious situations. In the lunchroom, Joe fibbed for a laugh, claiming he'd baked the pie himself.
Pro Tip 3/3
Often Juvenile
Frequently associated with children who might fib to escape trouble or punishment. The child fibbed about not taking the cookie from the jar.