According to locals, stupid radar never reveals them (4)
I believe the answer is:
darn
'according to' is the definition.
Both the definition and answer are singular nouns.
Perhaps there's an association between them I don't understand?
'locals stupid radar never reveals them' is the wordplay.
'DARN' is hidden within the letters.
But, I am unsure how the hidden word is indicated.
Can you help me to learn more?
(Other definitions for darn that I've seen before include "Blow" , "Repair by sewing, socks perhaps" , "Mend with wool using needles" , "Mend a hole in a sock" , "Mend with 17s - mild expletive" .)