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"greasy" is also used as a crossword clue. If that's what you saw, the answer is often oily (4 letters).
Definitions
smeared or soiled with grease or oil
Word origin
From Middle English gresi, gressy, equivalent to grease + -y.
Used in a sentence
“a greasy mineral”
“[…] mechanic slaves With greasy aprons, rules, and hammers, shall Uplift us to the view […]”
“With a skin full of alcohol and a probable overwhelming desire for a greasy kebab, I had evidently got myself into such a state that I was unable to locate the correct door to the fast food shop.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Covered with oil”6 letters
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