What this suffix does
-tongued forms compound adjectives that describe the quality, style, or moral character of someone's speech — specifically the tongue as an instrument of persuasion, deception, or cruelty. Silver-tongued, sharp-tongued, forked-tongued, honey-tongued — each compound places the speaker's communication style on a spectrum from elegantly persuasive to deliberately deceitful. These are among the most poetic and classical compound elements in English, with roots in Renaissance literature and the Bible.