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2.
grind + hustle = grustle
"I'm on my grustle."
by mikey star March 23, 2007
 
1.
a verb formed from the words grind and hustle meaning to put in work or constant effort against harsh opposition.

Also a noun as in "the grustle" -- i.e. the rat race, the daily grind.
How are things going?

"I'm on the grustle."

or

"grustling, son."
by diego del sol August 17, 2007