1
general::
Phrase(s): laugh at someone or something
to chuckle or giggle loudly at someone or something, perhaps in ridicule. • Thank goodness, the audience laughed at all my jokes. • Don’t laugh at me! I’m doing my best! • Everyone laughed at the love scene because it was so badly done.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
Treat lightly, scoff at. For example, He said the other children all laughed at his jacket, or They stopped laughing at his theory when it proved to be correct. [Late 1300s]
American Heritage Idioms