by TheBigCanucklehead March 14, 2015

A shortened version of "probably." Known to be used by Tyler Joesph, the all amazing smol bean of Twenty One Pilots.
Person 1 - Yo, will you go see that new horror movie that's out?
Person 2 - Yeah, I prolly will!
Person 1 - Okay, see ya there!!
Person 2 - Yeah, I prolly will!
Person 1 - Okay, see ya there!!
by penceyprep June 17, 2016

A D version of the word 'probably' used when you're too lazy or in too much of a hurry to say the whole word.
by TurdNugget June 24, 2015

Prolly is another word for probably. You will most likely see teenagers use this a lot more than adults because it’s not known to be “proper grammar”.
by l.f.e April 20, 2020

by Lyssa DL May 11, 2008

another word for the word probably not, a shorter version usually used in slang cities like Berdoo. Another creative used by monica.
by Dom-Dizzle July 26, 2009
