Crossword Genius

Asleep, but prepared to slip away (6)

Ross

I believe the answer is:

elapse

I'm a little stuck... Click here to teach me more about this clue!

'to slip away' is the definition.
(synonyms)

'asleep but prepared' is the wordplay.
'asleep' can be anagrammed to 'ELAPSE'.
However, I am unsure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for elapse that I've seen before include "Go past" , "Tick by" , "Slip away" , "Pass away - asleep (anag)" , "Of time, pass by - please" .)

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