Short way of saying probably. Lazy people or people that just can't spell "probably" will use this shortened version.
He is prolly the last person you should be asking for advice.
by guavaava June 23, 2018
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You prolly should've just went yourself it would've taken less time.

probably probability
by TheBigCanucklehead March 14, 2015
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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!!
by penceyprep June 18, 2016
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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.
Me: You going out tonight?

You: Prolly.
by TurdNugget June 17, 2015
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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”.
*girl gets handed back a failed test*

“Oh no! I prolly have a really bad grade!”
by l.f.e April 20, 2020
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A shortened form of probably, used mainly in texting and emails.
1: Are you coming over tonight?
2: Yea, I'll prolly show up for a while.
by Lyssa DL May 11, 2008
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