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Definition of cachinnate


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cach·in·nate  audio  (kk-nt) KEY 

intr.v.
cach·in·nat·ed, cach·in·nat·ing, cach·in·nates
To laugh hard, loudly, or convulsively; guffaw.

ETYMOLOGY:
Latin cachinnre, cachinnt-, of imitative origin

OTHER FORMS:
cachin·nation(Noun), cachin·nator(Noun)


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