1/18 down
Determined
effort
to
meet
upstairs
for
massage
(7,7)
Determined effort to meet upstairs for massage (7,7)
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The definition is at the beginning of the clue.
How the clue works
The definition is Determined effort. "Massage" signals an anagram, and if you rearrange the letters of to meet upstairs, they give you exactly the seven-and-seven you're after.