Resting bouncer missing nothing at entrance to theatre (7)

I believe the answer is:

dormant

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'resting bouncer' is the definition.
'dormant' can be an answer for 'resting' (thesaurus). I'm not sure about the 'bouncer' bit.

'missing nothing at entrance to theatre' is the wordplay.
'missing nothing' becomes 'dorm' (I can't justify this - if you can you should believe this answer much more).
'entrance' suggests taking the first letters.
'to theatre' becomes 'NT' (National Theatre).
The first letter of 'at' is 'a'.
'dorm'+'a'+'nt'='DORMANT'

Can you help me to learn more?

(Other definitions for dormant that I've seen before include "Lying inactive as if in sleep" , "Suspended" , "Mordant about lying inactive" , "Hibernating" , "Sluggish" .)

I've seen this clue in The Times.

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