Sickly looking, possibly ill in a home (6)
I believe the answer is:
pallid
'sickly' is the definition.
(thesaurus)
'possibly ill in a home' is the wordplay.
'possibly' indicates anagramming the letters.
'in' means one lot of letters goes inside another.
'a home' becomes 'pad' (pad can mean a person's home).
'ill' anagrammed gives 'lli'.
'lli' put within 'pad' is 'PALLID'.
'looking' acts as a link.
This may not be right. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for pallid that I've seen before include "Pale, insipid" , "Pale complexion because of poor health" , "Pale and wan (6)" , "Sickly pale" , "lacking colour or brightness" .)