Was he wise to be alone one day! (7)
I believe the answer is:
solomon
'was he wise' is the definition.
The definition suggests a singular noun which matches the answer. I also know that 'wise' relates to this answer.
'alone one day' is the wordplay.
'alone' becomes 'solo' (as in a musical solo).
'one day' becomes 'mon' (short for Monday).
'solo'+'mon'='SOLOMON'
'to be' acts as a link.
Can you help me to learn more?
(Other definitions for solomon that I've seen before include "Wise man" , "OT king" , "Short-lived" , "Old king of Israel famous for wisdom and magnificence" , "King of Egypt famous for wisdom and magnificence" .)