blandiloquence (n.)

"flattery in speech," 1650s, from Latin blandiloquentia, from blandiloquens "speaking flatteringly," from blandus "flattering, alluring" (see bland) + loquens, from loqui "to speak" (from PIE root *tolkw- "to speak"). Blandiloquous is attested earlier (1610s). Latin also had blandiloquentulus "flattering in speech."