The most common and most likely answer to this crossword clue is the 9 letter word OVERSLEEP
I've seen this crossword clue in Financial Times
O
V
E
R
S
L
E
E
P
More clues leading to the result OVERSLEEP
- Fail to get up, turning huntsman’s gun on duck
- Belted peers love to ignore call to be roused
- Lee proves getting sacked is a bad way to avoid the early commute
- Past IOM town’s turning, come to later than planned
- About to observe power throttling source of liberty? Don’t get aroused
- Done with the rest? On the contrary!
- Stay out having stayed out?
- Get up late to provide extra rest
- Don’t turn out for some play at Lord’s, shelter by Pavilion End
- Eels prove slippery and fail to rise
Buddy explains!

The straight part
We know that "Done with the rest? On the contrary" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case done with the rest? on the contrary = oversleep.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 OVERSLEEP mean?
OVERSLEEP verb- To sleep for longer than intended.
- To sleep for longer than one intended.
- To sleep beyond (a given time), to sleep through (an event etc.).