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.

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

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

In Lists: Top 2000 English words, Spoken greetings, Things you say when someone gets home, more... Collocations: say a quick hi (to), [waved, nodded] to say hi, stop [to, and] say hi, more...

Jul 9, 2025 · Discover the full meaning of "hi," its surprising etymology, and common uses. This entry covers definitions, examples, and phrases, offering a comprehensive look at this everyday greeting.

Oct 1, 2023 · What is the meaning and origin of the word “hi”? Learn how this word has been used to greet and express interest in others.

It is also a joke, a subversion of the term hi -fi (from 'high fidelity', meaning the faithful reproduction of the original sound), and an attitude that you don't need to have access to the latest or most …

'Hi, Liz,' she said shyly. Collins COBUILD Advanced Learner’s Dictionary. Copyright © HarperCollins Publishers

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