suave or persuasive in speech
WordReference Random House Unabridged Dictionary of American English © 2025
smooth-tongued
(smo̅o̅ᵺ′tungd′),USA pronunciation adj.
- fluent or convincing in speech;
glib.
- 1585–95
Collins Concise English Dictionary © HarperCollins Publishers::
'smooth-tongued' also found in these entries (note: many are not synonyms or translations):