1. A Vietnamese common male's name.

2. A weird way of saying 'hi' in English.

3. Japanese for saying yes.
1. Hai, will you do your homework?

2. Hai guys!

3. Person 1: Are you gonna publish some Urban Dictionary definitions?

Person 2: Hai, Person 1.
by MisaTange July 9, 2009
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-interjection
Hai is a colloquialism used mainly in north western parts of Ireland especially in counties Monaghan, Cavan, Roscommon, Mayo and Galway.

An Irish cult TV show, Hardy Bucks, has served to spread the use of this once localized colloquialism throughout most of the country of Ireland and in small pockets of London, Germany, Holland and the Middle East. ‘Hai’ is actually the word 'Hey' and is used as an exclamation to call attention or to express pleasure, surprise, bewilderment, etc. However, due to the nature of the western Irish accent, the listener interprets the spelling as ‘Hai’.

The word is usually used as the final word of a sentence. It can be used in almost every context and situation but is most effective when used to conclude a question.
Stephen: "Are we going drinking Brandy Hai?"
Neil: "Does the Pope make the world a safer place for paedophiles hai?"
...
Brendan: "Come ere Hai"..(Expressing a need to draw attention to a subject matter), "I hope ye all have your Christmas jumpers for the 23rd Hai”(Here the word is used as an exclamation of intent).
by Kevin Prince Burgertang December 13, 2010
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A super cool Vietnamese name that anyone would really wish to have because it's pronounced "hi".
by pokemonkey January 6, 2010
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Cute way to say Hi.
Looks so cute compared to the regular, hi or hello.

Usually used for typing, but can also be said outloud. (H-i-ah)
Person1: Hey, What's up?
Person2: Hai. I'm good, what about you?
by MEOW?!?!?!?! November 21, 2011
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A cooler way to say hi or hello. Originates from an Asian culture.
You: Hai guys

Guys: Hey Brittany (she's so cool!!!)
by Zebra Girl December 20, 2009
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