The most common and most likely answer to this crossword clue is the 8 letter word RESTLESS
I've seen this crossword clue in Independent
R
E
S
T
L
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S
More clues leading to the result RESTLESS
- Losing weight, fights in the ring with son, keeping moving
- Worried having to work longer hours?
- Troubled wife avoids fights with son
- Agitated way the French ship goes after engineers
- Fidgety? Be more active!
- Others not as unsettled
- Uneasy when lacking support
- Bored? Take fewer breaks
- Lacking support, snooker player is so impatient
- Anxious struggle to get wife off ship
Buddy explains!

The straight part
We know that "&lit-ish/double defn" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case &lit-ish/double defn = restless.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 RESTLESS mean?
RESTLESS adjective- Not allowing or affording rest.
- Without rest; unable to be still or quiet; uneasy; continually moving.
- Not satisfied to be at rest or in peace; averse to repose; eager for change; discontented.
- Deprived of rest or sleep.