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Dictionaryhi
interjection

hi

An informal greeting.

I say hi to my neighbor on my way out.

Etymology

Hi belongs to the family of short attention-getting calls and greetings, alongside hey. Its informal function is to acknowledge or greet someone directly.

More examples

  • Oh, hi! I didn't expect to see you here.
  • Say hi to your sister for me.
  • We stop by their table to say hi.

Similar words

hello
A neutral greeting suitable for casual or formal situations.
hey
A very casual greeting, especially among friends and peers.