Question

خيلي بد دهني

Answer 1

abusive/foul-mouthed

Comments

Can't be better!

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kind of you as ever

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Sharpe-tongued هم تقریبا همین معنی میده.

Answer 2

Excellent, I've just come across this phrase as well & thought you might like it too:

a potty mouth:

person who has or is a potty mouth uses offensive language

Answer 3

You are such a loud-mouth/dirty mouth.