There are 2 main definitions of hi in English:

hi1

Syllabification: hi

exclamation

informal
Used as a friendly greeting or to attract attention: “Hi there. How was the flight?”
More example sentences
  • Hi, Jessica, how are you?
  • ‘Hi, is Danielle there?’ asked a guy's voice.
  • Hi there everyone. My name's Jeb.

Origin

natural exclamation: first recorded in late Middle English.

Definition of hi in:

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There are 2 main definitions of hi in English:

HI2

Syllabification: HI

abbreviation

Definition of hi in: