scold, torment, chastise
嘖 centers on harsh verbal attack: scolding, tormenting with words, or chastising someone sharply.
嘖 combines 口 (mouth) with 責, which likely contributes both sound and the idea of blame or reproach, suggesting scolding with the mouth.
A mouth 口 beside 責 (blame) vividly shows someone using their mouth to scold and torment another person.
For サク, imagine a harsh scolding that feels like a sharp sack of words thrown at you: sack -> サク, and the mouth 口 delivers the verbal torment.