Cryptic crossword clue
Ebullient opening turn from Grease 4

The most common and most likely answer to this crossword clue is the 4 letter word LUBE

I've seen this crossword clue in Financial Times
L
U
B
E

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The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.
This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.

What does LUBE mean?

LUBE noun
  1. Lubricant
LUBE verb
  1. To lubricate

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