noun
bad voice; unpleasant voice; evil speaking
Refers to an unpleasant or harsh voice, or to malicious speech. The 'evil speaking' sense is somewhat literary.
彼の悪声は聞くに堪えない。
His unpleasant voice is unbearable to listen to.
悪声を放つ者は信頼を失う。
Those who speak ill of others lose trust.