Crossword Genius

Bulletproof with target moving (10)

Ross

I believe the answer is:

watertight

'bulletproof' is the definition.
(thesaurus)

'with target moving' is the wordplay.
'moving' is an anagram indicator.
'with'+'target'='withtarget'
'withtarget' with letters rearranged gives 'WATERTIGHT'.

(Other definitions for watertight that I've seen before include "Without loopholes" , "seaworthy" , "Impregnable" , "Impermeable - unbreakable" , "Proof against leaking" .)

I've seen this clue in The Telegraph.
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