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Example:He couldn't help but giggle at the sight of her antics.

Definition:A short, light, and pleased laugh, especially when emanating from a playful or mischievous person.

Example:She gave a chuckle at his attempt to explain the joke.

Definition:A light, low laugh that is privately expressed.

Example:In the quiet library, someone let out a titter of laughter.

Definition:A soft, high laugh or giggle, especially involuntary or shy.