diplomatic
diplomatical
refined
affable
agreeable
bland
buttery
charming
civilized
cordial
cosmopolitan
courteous
courtly
cultivated
cultured
debonair
delightful
disarming
distingue
downy
even
fair-spoken
fine-spoken
flat
fulsome
genial
glabrate
glabrescent
glabrous
glib
gracious
honey-mouthed
honey-tongued
ingratiating
leiotrichous
level
nonchalant
oily
oily-tongued
plane
pleasant
polished
polite
politic
regular
slick
smooth
smooth-shaven
suavely
captivate
complaisant
conciliatory
deferential
gentlemanly
good-humoured
graceful
ingratiate
persuasive
self-possessed
tactful
urbane
vivacious
well-bred
witty
Slav
salve
slav