cap 

The normie version of kapp or kappa that originated on twitch.

Normie: Among Us is the best game in the world, no cap.

cap by greasycat April 5, 2021

Cap 

What did she mean by this

"This is the most average person i have seen in my entire life"

"Cap, you ain't here this from me but i'd turn her asshole into a twinkie without a second thought"

Cap by rjaeyfaf April 17, 2021

cap 

one definition for the word cap is to shoot someone but most people
know it as the more current definitions which basically means that someone is lying so technically just a synonym for lying or a lie

jimmy: bro imma cap you if you don’t stfu
chris: alright jimmy calm down
or
jimmy: ayo chris david told me you were going on vacation to hawaii with everyone but didn’t invite me
chris: that’s cap i would never do that

cap by immagenius1115 April 21, 2021

Cap 

Lying about something or over-exaggerating something.

He was capping when he told me about you.

Cap by Mr.mentor June 8, 2021

cap 

This word basically means "bullshit" or "lies".

Person 1:"Holy shit John said he flew to the moon!"
Person 2:"That's cap"

cap by jfjrkdjdindksos June 9, 2021

Cap 

An internet slang meaning lie.

That's Cap

Cap by saaammm June 10, 2021

Cap 

verb, slang To kill someone, especially with a gun.

We cannot enter inside because they are waiting to cap somebody.

Cap by Roz’0 June 10, 2021