The most common and most likely answer to this crossword clue is the 6 letter word ENOUGH
I've seen this crossword clue in Financial Times
E
N
O
U
G
H
More clues leading to the result ENOUGH
- One flipping expression of disgust is sufficient
- In French, Hugo managed adequately
- One hug could be sufficient
- On huge roundabout no more!
- See 26dn.
- One hug might be all you need
- Adequate figure raised, I’m disgusted
- One hug, possibly as good as a feast?
- Sufficient in The Noughties
- The makings of a feast? Say no more!
Buddy explains!
The straight part
We know that "all you need" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case all you need = enough.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 ENOUGH mean?
ENOUGH adverb- Sufficiently.
- Fully; quite; used to express slight augmentation of the positive degree, and sometimes equivalent to very.
- A sufficient or adequate number, amount, etc.
- Stop! Don't do that any more!