: to criticize (someone) harshly She often slags off other musicians to try to make herself look good.

What does slag mean in slang?

Definition of slag (Entry 2 of 3) slang, chiefly British. : a lewd or promiscuous woman.

What is Irish slagging?

Slagging means to make fun of. If you've read our detailed guide to Irish insults, you'll have an idea of the types of slags that Irish people throw at each other. For example, 'He was slagging me, so I gave him a kick in the bollox'.