Stunned pair is inside safe and sound finally (9)
I believe the answer is:
surprised
'stunned' is the definition.
(similar in meaning)
'pair is inside safe and sound finally' is the wordplay.
I cannot quite see how this works, but
'pair' could be 'pr' (abbreviation) and 'pr' is found within the answer.
'is' is within the answer.
'safe' could be 'sure' (both can mean secure) and 'sure' is found within the remaining letters.
A single letter 'd' remains which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for surprised that I've seen before include "hit for six" , "Caught in the act" , "Shocked" , "Taken unawares" , "Startled" .)