1
Stage 1 of 3
hilaros
Greek · ancient
"cheerful"
Greek, the root of 'hilarity'
2
Stage 2 of 3
hilaris
Latin · ancient
"cheerful"
also gave the names Hilary and Hilaire
3
Stage 3 of 3
hilarious
English · 1820s
"cheerful"
the sense 'extremely funny' dates from the 1900s
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