Laugh out loud.
Meaning: This means to make a sound that shows you are happy or find something funny. It's like saying, Make a happy sound that can be heard by others.
Choice of Words: Laugh is a verb that means to make a sound that shows you are amused or happy. Out is an adverb that means away from or outside of something. Loud is an adjective that means making a lot of noise.
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Related Expressions