Unsparing in censure, criticism, or reproof.

That hits or strikes; striking (literal and figurative).

Censorious; scathing.

Severely critical; cuttingly sarcastic.

Chiefly of pain: Acute, darting, piercing.

figurative. Having or exhibiting impetus, energy, or drive; uncompromising, direct, honest, esp. in providing unpalatable facts or strong criticism.

That smashes, in various senses.

Of a slashing nature.

Of invective, etc.: Very sharp and damaging; searing, ‘withering’, cutting.

Severely critical or condemnatory.