Wife-to-be, ignoring second letter, will do this with her time instead (4)
I believe the answer is:
bide
'do this with her time instead' is the definition.
The definition suggests a singular noun but the answer is not.
'wife-to-be ignoring second letter' is the wordplay.
'wife' becomes 'bride' (I have seen 'Wife of groom ' mean 'bride' so perhaps 'wife' could also mean 'bride').
'to be ignoring' suggests deleting specific letters.
'second' becomes 're' (prefix meaning second in eg review, re-education).
'letter' becomes 'e' ().
'bride' with 're' removed is 'bid'.
'bid'+'e'='BIDE'
'will' is the link.
Can you help me to learn more?
(Other definitions for bide that I've seen before include "To - one's time is to wait for the right opportunity" , "Tarry" , "Dwell, stay" , "Dwell, of old" , "Remain; await (time)" .)