guffaw
US /ɡʌfˈɑː/
UK /ɡʌfˈɑː/

1.
a loud and hearty laugh
:
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His joke was met with a chorus of guffaws from the audience.
•
He let out a loud guffaw, startling everyone in the room.
1.
laugh loudly and heartily
:
•
He began to guffaw at the comedian's antics.
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The entire room began to guffaw when the speaker tripped.