Definition of “hi”
interjection:
-
A friendly, informal, casual greeting said when meeting someone.
from Wiktionary, Creative Commons Attribution/Share-Alike License
-
adjective:
-
Informal spelling of high, often hyphenated.
from Wiktionary, Creative Commons Attribution/Share-Alike License
-
noun:
-
"Hi" or similar greeting.
from Wiktionary, Creative Commons Attribution/Share-Alike License
-