Current cost spiralling around, but he doesn't complain (5)
I believe the answer is:
stoic
'spiralling around but he doesn't complain' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'current cost' is the wordplay.
I cannot really see how this works, but
'current' could be 'i' (symbol for electric current) and 'i' is located in the answer.
an anagram of 'cost' is 'stoc' which is located in the left over letters.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for stoic that I've seen before include "philosophical type" , "Greek philosopher" , "Solemn ceremony" , "Athenian philosopher" , "One who endures hardship uncomplainingly" .)