Tough resistance shown by pair coming in down under? (7)
I believe the answer is:
arduous
'tough' is the definition.
(I've seen this before)
'resistance shown by pair coming in down under?' is the wordplay.
'resistance' becomes 'r' (electronics abbreviation).
'shown by' means one lot of letters go next to another.
'pair' becomes 'duo' (two people).
'coming in' indicates putting letters inside.
'down under?' becomes 'aus' (I can't justify this - if you can you should give a lot more credence to this answer).
'r'+'duo'='rduo'
'rduo' placed into 'aus' is 'ARDUOUS'.
Can you help me to learn more?
(Other definitions for arduous that I've seen before include "Fatiguing (task)" , "Difficult, tiring" , "Burdensome" , "Toilsome" , "Requiring much effort" .)