In doubt, new curate about new home (9)
I believe the answer is:
uncertain
'in doubt' is the definition.
(thesaurus)
'new curate about new home' is the wordplay.
'new' is an anagram indicator.
'about' means one lot of letters go next to another.
'new' becomes 'n'.
'home' becomes 'in' ('he's home' can mean 'he's in'**).
'curate' after 'n' is 'ncurate'.
'ncurate' with letters rearranged gives 'uncerta'.
'uncerta'+'in'='UNCERTAIN'
(Other definitions for uncertain that I've seen before include "Not completely confident or sure of" , "Lacking confidence" , "up in the air" , "Not definitely known" , "Unsure" .)