The Oxford Thesaurus An A-Z Dictionary of Synonyms - eloquentadj.

1) expressive, articulate, silver-tongued, fluent, well-spoken, effective, persuasive, convincing, cogent, trenchant, incisive, graphic, vivid, striking, facile, smooth, glib, oratorical, rhetorical: He was an eloquent speaker. He rose and gave an eloquent speech. 2) suggestive, meaningful, pregnant: His eyebrow was raised in eloquent scepticism.