Spotted one philanderer getting caught (7)
I believe the answer is:
cheetah
'spotted one' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for cheetah that I've seen before include "Swiftest mammal" , "Fast-running cat" , "Beast" , "Swift predator" , "Swift large wild cat with spotted coat" .)