Little appreciation for one who is late (4)
I believe the answer is:
obit
'little' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.
'appreciation for one who is late' is the wordplay.
'appreciation' becomes 'bit' (I can't explain this - if you can you should believe this answer much more).
'for' means one lot of letters go next to another (I've seen this in other clues).
'is late' suggests the final letters (I've seen 'latest' mean this).
The final letter of 'who' is 'o'.
'bit' after 'o' is 'OBIT'.
Can you help me to learn more?
(Other definitions for obit that I've seen before include "Short version of brief article written about dead person" , "Write-up of a death" , "Biographical death notice (abbr)" , "newspaper article" , "Biography after death, in short" .)