Leaps into an indiscretion (5)

I believe the answer is:

lapse

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'an indiscretion' is the definition.
(I've seen this in another clue)

'leaps' is the wordplay.
'leaps' anagrams to 'LAPSE'.
However, I am not clear how this is indicated.

'into' acts as a link.

Can you help me to learn more?

(Other definitions for lapse that I've seen before include "Brief failure of judgement" , "Moral fall" , "Careless mistake" , "Error; oversight" , "Brief failure (of concentration)" .)

I've seen this clue in The Globe and Mail.

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