Father retires at the end of January approaching spring? If you say so! (4,4)
I believe the answer is:
very well
'if you say so' is the definition.
(I've seen this before)
'father retires at the end of january approaching spring?' is the wordplay.
'father' becomes 'rev' (I've seen this in other clues).
'retires' shows that the letters should be reversed in order.
'at the end of' says to take the final letters.
'approaching spring?' becomes 'well' (I've seen this before. I am not sure about the 'approaching' bit.**).
The last letter of 'january' is 'y'.
'rev' back-to-front is 'ver'.
'ver'+'y'+'well'='VERY WELL'
Can you help me to learn more?
(Other definitions for very well that I've seen before include "okay" , "Outstandingly" , "In the pink - all right then" , "If you insist" , "Ok, as you wish - sounds good" .)