Ja is short for the word "Ja-ne" which is roughly Japanese for "See you later"
In many anime aswell as in IRL japan the "Hip" crowd will depart from one another by saying the word "Ja"
by Alex bowman June 3, 2005
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JA! is a way of saying "In your face" without sounding lame as hell by saying "in your face"
"yeah thats not what your mom was thinking last night.....oh yeah....i went there....so JA!"
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Acronym for jealous asshole syndrome which is characterized really jealous people.
omg, that girl had major jas when she dumped her boyfriend.
by jizzyyy April 28, 2009
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A Norwegian term for “yes
Person “Hey, can you give me $5?”
Norwegian “Ja!”
by Obhioan April 15, 2022
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An abbreviation for Just A Second.

used when one is very temporarily unable to communicate within an instant messenger conversation.

generally the shortest amount of time you can be away and still need to announce your absence. JAS<BRB and JAS<h/o (hold on)
1: hey where were you today?
2: (almost finished with a phone call) jas
1: aight
-moments later-
2: back. s'craick?
1: hey cool. where were you today?
2: who me? ah man i went home sick.
by Jordan Dylan Merkin March 19, 2008
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