unctuous
/ˈʌŋktjʊəs/adjective
1
- (of a person) excessively or ingratiatingly flattering; oily（人）甜言蜜语的; 油腔滑调的; 过度谄媚的：
he seemed anxious to please but not in an unctuous way.
他似乎很想让人高兴, 但并不是讨好巴结。
2
- (chiefly of minerals) having a greasy or soapy feel（尤指矿物）油性的, 油质的。
派生词
unctuously
adverbunctuousness
noun词源
late Middle English （in the sense 'greasy'）： from medieval Latin unctuosus, from Latin unctus 'anointing', from unguere 'anoint'.