Something few swear any more or say nowadays (4)
I believe the answer is:
egad
'something few swear any more' is the definition.
I can't judge whether this definition defines the answer.
'say nowadays' is the wordplay.
'say' becomes 'eg' (short for 'exempli gratia', 'for example' in Latin).
'nowadays' becomes 'AD' (AD, Anno Domini, as opposed to BC, Before Christ).
'eg'+'ad'='EGAD'
'or' acts as a link.
Can you help me to learn more?
(Other definitions for egad that I've seen before include "Mild oath - aged (anag)" , "Old exclamation; aged (anagram)" , "Mild oath (archaic)" , "Archaic exclamation of surprise" , "Christ" .)