26 across
In
credit,
comfort
is
to
grow
(8)
In credit, comfort is to grow (8)
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The definition is at the end of the clue.
How the clue works
The wordplay here is a straightforward charade. To grow is the definition, and you build the answer by stringing together IN (taken straight from the clue), CR (the standard abbreviation for credit), and EASE (which means comfort).