The most common and most likely answer to this crossword clue is the 9 letter word PERSPIRED
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More clues leading to the result PERSPIRED
Buddy explains!

The straight part
We know that "sweated" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sweated = perspired.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 PERSPIRED mean?
PERSPIRED verb- To emit (sweat or perspiration) through the skin's pores.
- To be evacuated or excreted, or to exude, through the pores of the skin.