HI definition: 1. used as an informal greeting, usually to people who you know: 2. written abbreviation for the…. Learn more.

The meaning of HI is —used especially as a greeting. How to use hi in a sentence.

A friendly, informal, casual greeting said when meeting someone. Hi, how are you? I just dropped by to say “hi”.

HI definition: (used as an exclamation of greeting) hello! See examples of hi used in a sentence.

Ben was about to try him at home, say hi to Ophelia and find out where he might be.

hi (haɪ) sentence substitute an informal word for hello [C20: originally US, from hiya]

Definition of hi exclamation in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.