Cryptic crossword clue
Last of oil covered in sticky substance, well black 6

The most common and most likely answer to this crossword clue is the 6 letter word GLOOMY

G
L
O
O
M
Y


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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 GLOOMY mean?

GLOOMY adjective
  1. Not very illuminated; dim because of darkness, especially when appearing depressing or frightening.
  2. Suffering from gloom; melancholy; dejected.

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