Definition of hi
(Entry 1 of 2)
—used especially as a greeting just called to say hi
HI
abbreviationDefinition of HI (Entry 2 of 2)
1
Hawaii
2
high intensity
3
humidity index
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Merriam-Webster unabridged
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Time Traveler for hi
The first known use of hi was in the 15th century
See more words from the same century