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1.
something that causes disapointment
the even was very anticlimactic
by pudding11 April 26, 2006
 
2.
the opposite of building to a climax. instead, making potentially rising ideas and energy steady, or falling.

relating to a person's tone of voice; sounding dull, less enthusiastic, or normal tone in cases of excitement.
Sarcasm would be an example of being anticlimactic.

"Oh WOW! that sounds soooo...exciting..."
"That was sure anti-climactic"
by BRL~BP October 28, 2009
 
3.
A dull or disappointing ending or result.
Mike: I'll get the last kill of the round!
*kills an enemy*
*game ends*
Mike: That was anticlimactic.
by agreensnowman June 17, 2014
 
4.
Blue balls, not being able to sexually fulfill yourself
"Aww man, this website always leaves me hanging," Tom said anticlimactically.
by homfrog September 15, 2009