Nowadays have time for proverb (5)
I believe the answer is:
adage
'proverb' is the definition.
(synonyms)
'nowadays have time' is the wordplay.
'nowadays' becomes 'AD' (AD, Anno Domini, as opposed to BC, Before Christ).
'have' means one lot of letters go next to another.
'time' becomes 'age' (an age is a period of time).
'ad'+'age'='ADAGE'
'for' is the link.
(Other definitions for adage that I've seen before include "Maxim, aphorism" , "Old saying, maxim" , "Proverb expressing a general truth" , "Wise old saying" , "Short statement expressing a general truth" .)