So tense in this place with enemy restricting resistance (9)
I believe the answer is:
therefore
'so' is the definition.
(I know that so can be written as therefore)
'tense in this place with enemy restricting resistance' is the wordplay.
'tense' becomes 't' (grammatical abbreviation).
'in this place' becomes 'here' (synonyms).
'with enemy' becomes 'foe' (foe can mean an enemy or rival. I am not sure about the 'with' bit.).
'restricting' is an insertion indicator.
'resistance' becomes 'r' (abbreviation in physics and electronics).
'foe' placed around 'r' is 'fore'.
't'+'here'+'fore'='THEREFORE'
Can you help me to learn more?
(Other definitions for therefore that I've seen before include "has a triangular formation in maths?" , "Consequently - for that reason" , "as result" , "Thus" , "It follows" .)