increasing or enlarging by successive addition
the car is cumulative
by yachyonig December 17, 2014
A sperm cell that was underdeveloped and somehow won the race
Bro 1: Yo bro you look like a cumulant.
Bro 2: I have 98 chromosomes.
by retardBloke42 March 8, 2022
The act when Cum and Ejaculation are combined to make a bigger and larger of quantity of semen come out.
Dude, my cumulation was insane on her last night.
by Markus Sexlord March 26, 2021
Noun: Sperm that has flowed out of the erect penis during an act of sexual intercourse.

Verb: To drip massive amounts of sperm onto the face of a female individual.
See bukkake

Plural: Cumuli
Plural Noun: My penis is covered in Cumuli.

Verb: Now I am going to Cumulous on you Jenny.
by Semli Arigon August 13, 2004
a word used to describe the feeling associated with having something accumulate and orgasming all over the place all at the same time. this word is usually used by asians who have difficulties speaking the engrish ranguage.
"i want to cumulate all over your face"

-"dude, last night i was putting my legos into a pile and jacking off at the same time"

-"so you were cumulating?"
-"yeah brahhh"
by antzinthepantz April 19, 2010
to lose ones sponch,hegum, manstuff.
What an asian dishwasher says when your 3 hrs late.
Carl is always ready to cumulate when Sally is in town.
OR Hey chaaie why always cumulate.
by John P Ursel February 16, 2008
someone who cums in the same place(i.e., towel, corner of room, blow up doll) and it accumulates.
That nerd is such a cumulator
by Shadow Tiger October 27, 2006