slag off
Talk someone down
Slag off is British slang meaning to criticize someone harshly or speak disparagingly about them, often behind their back.
He's always slagging off his coworkers.
The term carries a casual, somewhat vulgar tone and implies sustained or repeated verbal attacks rather than a single comment.
It can also appear as a noun: a slag-off is an instance of such criticism.
- criticizeJudge unfavorably, vocally
- trash-talkCompetitive verbal abuse
- talk shitDisparage someone verbally
- bad-mouthCriticize someone harshly
- talk smackSpeak disparagingly about someone
diss · have a go at · abuse · lay into · rip into · knock · insult · call out · throw shade · disparage · berate · rebuke · roast · rag on · vilify · lambaste · drag through the mud · mock