Sense wife overcoming new technology (3)
I believe the answer is:
wit
'sense' is the definition.
(I have seen 'Good sense' mean 'wit' so perhaps 'sense' could also mean 'wit')
'wife overcoming new technology' is the wordplay.
'wife' becomes 'w' (abbreviation).
'overcoming' says to put letters next to each other (in a down clue, some letters go above others).
'new technology' becomes 'IT' (information technology).
'w'+'it'='WIT'
(Other definitions for wit that I've seen before include "Humour; wag" , "Drollness, humour" , "Intelligence; humorous person" , "Joker" , "Quickness and cleverness with words" .)