Top Definition
The sound when a kung fu master makes, when laughing.
Mary: OMFG, yuu are so funny.
Becky: jaha!
by mary_1293 January 19, 2009
1 more definition
nobody knows what the word means exacly, it is used in msn chat, and sometimes in real life.
it is a way of saying you dont give a fuck and couldnt care any less.

(note: this word is mostly used by dutch people)
when jimmy asked tom if he liked his new pc , tom replied: jaha.

tom doesnt care, jimmy doesnt know what he means and is confused.
by [_m4] June 10, 2005

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