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12.
A word used as a filler in many conversations in real life and in online chatting.

Used to fill space during awkward silences (see example 1), boring conversations, or when you don't have anything to say because you didn't pay attention (see example 2).

Often used in conjunction with um, uh totally and definitely. (see examples)

Also used when a bad joke falls flat. (see example 3)
Example 1:

Joe: I like men.

John: um yeah...

(awkward silence)

Example 2:

Jenny: blah blah...and then we totally ditched him and went out to the mall. He deserved it right?

Adam: (snaps back into attention) uh yeah. totally.

Example 3:

Ching ching: AND THEN MY MOM SAID THE EGGRO WAS ACTUALLY A DUMPRING. LOL

Tom: ...yeah...
by La Dolce Malattia (epik high) January 12, 2011
 
1.
The answer to any question.
Q. What time is it?
A. Yeah.
by where am i? February 14, 2005
 
2.
can be used to get out of any situation known to man
(walk into room full of people in suits who turn and stare at u)
YEAH!
(walk out)
by J November 30, 2004
 
3.
Yes.

Can be used to delay a particularly embarrasing moment or if you're lost for words, like uh.

Can be used to answer an awkward or idiotic comment.

All purpose response to any situation.
Fiorella: Are you ready for some some hot, crazy lovin'?
Mike: Yeah.

Fiorella: Why did you eat my all my damn sushi?
Mike: Yeeaah, about that...

George W. Bush: They misunderestimated me!
Mike: Yeah...

Troy: My hair's on fire. AAAARRRRRRRRGGHGHGHGH! My skin is burning!!!
Mike: Yeah.
by papermachete October 29, 2005
 
4.
Word used in every song with Lil John in it.
some song is playing in bacground:

Yeah!
by madman89 April 06, 2006
 
5.
One of the few words in Lil' John's vocabulary.
in a loud, annoying voice: YEAH! WHAT?! WATCH OUT!!!
by kryo June 22, 2004
 
6.
An adverb that makes everything sound better. Said with emphasis.
Yeah I broke my foot!
Yeah death!
Yeah yeah!
by Bettie, John, & Tiara November 17, 2002
 
7.
1. Used to ignore the negative aspects of a previous statement or comment.

2. To be used after a long period of laughter on a stupid/lame joke.

3. Used to piss someone off after they have spoken.
a) "Shit! You nearly hit that old guy!" (relpy) "hehe.... yeeeeah"

b) "Washing machines turn me on"
(reply) "hehehehe, hehehe, hehe, he, yeeeeah.."
by Oniken + Bluelance September 21, 2003