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English definition of “oily”

oily

adjective uk   /ˈɔɪ.li/ us  

oily adjective (WITH OIL)

consisting of or similar to oil: an oily liquid covered in oil or containing a lot of oil: an oily rag oily fish I've got oily skin (= it produces a lot of oil).

oily adjective (TOO FRIENDLY)

too friendly and polite in a way that is not sincere
(Definition of oily from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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