Wordology, Quents

Did you know the opposite of eloquent is pauciloquent "Uttering few words; brief in speech."

More '-quents':
falsiloquence - deceitful speech
flexiloquent - speaking ambiguously or using words of doubtful meaning
inaniloquent - prone to foolish or empty babbling
mendaciloquence - lying speech

Also good to know: sialoquent - spitting greatly while speaking.