Definition of laugh-out-loud in English:

laugh-out-loud

adjective

  • Likely to cause one to laugh out loud; hilarious.

adverb

  • Qualifying an adjective: such that one might laugh out loud; hilariously. Chiefly in "laugh-out-loud funny".

Origin

1970s; earliest use found in The Bookseller. From laugh + out + loud.

Pronunciation

laugh-out-loud

/ˈlɑːfaʊtlaʊd//ˈlafaʊtlaʊd/