9 across
Dislike
trio
of
characters
leaving
for
lack
of
enthusiasm
(6)
Dislike trio of characters leaving for lack of enthusiasm (6)
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The definition is at the end of the clue.
How the clue works
The definition is lack of enthusiasm. "Dislike" gives you ANTIPATHY, and once you take out the "trio of characters" — that's INT — you're left with APATHY.