Word: unctuously
Part of speech: Adverb
Syllables: unc
tu
ous
ly
Definition: Insincerely and excessively charming
Morphemes:
Affix: unctuous
Language: en
PoS: Adjective
Meaning: Profusely polite, especially unpleasantly so and insincerely earnest.
Etymology Compounds: Affix: unctum
Language: la
Decoded: unctum
PoS: Participle
Meaning: greasy, oily
Affix: -ly
Language: en
PoS: Suffix
Meaning: Used to form adverbs from adjectives.