In bath, some tops faded (2,4)
I believe the answer is:
at home
'in' is the definition.
(someone at home is 'in')
'bath some tops faded' is the wordplay.
'some tops' means to remove the first letter (I've seen 'topped' mean this (to top something is to remove its top)).
'faded' becomes 'ome' (I can't justify this - if you can you should believe this answer much more).
'bath' with its initial letter taken off is 'ath'.
'ath'+'ome'='AT-HOME'
Can you help me to learn more?
(Other definitions for at home that I've seen before include "In one's own house" , "Where one lives" , "In (for a party?)" , "ready to receive visitors" , "Familiar with" .)