All the jumping enough to kill (6)

I believe the answer is:

lethal

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'enough to kill' is the definition.
I can't judge whether this defines the answer.

'all the jumping' is the wordplay.
'jumping' is an anagram indicator.
'all'+'the'='allthe'
'allthe' anagrammed gives 'LETHAL'.

Can you help me to learn more?

(Other definitions for lethal that I've seen before include "--- Weapon, Mel Gibson film" , "Deadly, potentially fatal" , "Enough to cause death" , "bringing about the end?" , "Deadly or mortal" .)

I've seen this clue in The Sun.

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