The most common and most likely answer to this crossword clue is the 4 letter word YARE
Y
A
R
E
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The straight part
We know that "no longer ready" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case no longer ready = yare.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 YARE mean?
YARE adjective- Ready; prepared.
- Ready, alert, prepared, prompt.
- Eager, keen, lively, handy; agile, nimble.
- (of a ship) Easily manageable and answering readily to the helm; yar.
- Yarely.