Cad couple clock? (3-5)
I believe the answer is:
two-timer
'cad' is the definition.
Both the answer and definition are singular nouns.
Perhaps they are linked in a way I don't understand?
'couple clock?' is the wordplay.
'couple' becomes 'two' (two people or things).
'clock?' becomes 'timer' (something which times).
'two'+'timer'='TWO-TIMER'
Can you help me to learn more?
(Other definitions for two-timer that I've seen before include "One sleeps around" , "Deceiver" , "Unfaithful person" , "Unfaithful partner" , "One who is unfaithful to wife - twice?" .)