καταψιθυρίζω

A. whisper against, τινὸς πρός τινα Plu. 2.483c.

2. abs., ἡ ἐπιδίφριος καὶ ‐ψιθυρίζουσα λέξις in a low, conversational tone, Hieronym. ap. Phld. Rh. 1.199S.