Mr Spock denied this in no time strangely (7)
I believe the answer is:
emotion
'mr spock' is the definition.
The definition suggests a singular noun which matches the answer.
'denied this in no time strangely' is the wordplay.
'denied' becomes 'o' (I can't explain this - if you can you should believe this answer much more).
'this in' means one lot of letters goes inside another.
'strangely' indicates anagramming the letters.
'no'+'time'='notime'
'notime' anagrammed gives 'emotin'.
'o' inserted inside 'emotin' is 'EMOTION'.
Can you help me to learn more?
(Other definitions for emotion that I've seen before include "Fear possibly" , "Strong feeling as of love or hate" , "A strong instinctive feeling" , "reaction" , "Intense feeling" .)