sharp tongue(redirected from a sharp tongue)
A tendency to speak in a malicious or highly critical manner. Be prepared for your annual review—the boss tends to have a sharp tongue when going over your shortcomings. The mean old lady who lived on the corner made a reputation among us kids with her sharp tongue.
Fig. an outspoken or harsh manner; a critical manner of speaking. He has quite a sharp tongue. Don't be totally unnerved by what he says or the way he says it.