Supporter (10)
'supporter' is the definition.
(an ally is a friend or supporter)
This is all the clue.
(Other definitions for ally that I've seen before include "Team up" , "A friendly and reliable country" , "Friend, partner" , "often helpful when cluing adverbs" , "Join by marriage, treaty etc" .)
'supporter' is the definition.
(I know that supporter can be written as fan)
This is the entire clue.
(Other definitions for fan that I've seen before include "Manual cooling device - for admirer?" , "Zealot" , "Cooling device or disciple of performer" , "Great enthusiast" , "Lady Windermere's - -" .)
'supporter' is the definition.
(a bra gives support to breasts)
This is all the clue.
(Other definitions for bra that I've seen before include "I give a couple a lift" , "Chest supporter" , "Underwear item" , "support" , "one carrying chest" .)
'supporter' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for advocate that I've seen before include "Recommend - person acting on another's behalf" , "Publicly support (cause)" , "Recommend - lawyer" , "Caveat, do about lawyer in court" , "One pleads a cause" .)
'supporter' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for follower that I've seen before include "A loyal adherent - or a pursuer" , "One accepts the leadership of another" , "A devotee or a pursuer" , "Disciple" , "Person who succeeds" .)
'supporter' is the definition.
(I know that partisan is a type of supporter)
This is the entire clue.
(Other definitions for partisan that I've seen before include "Devoted to a cause or party" , "Happening immediately" , "Highly biased" , "of prejudiced views" , "Aspirant to be a guerilla" .)
'supporter' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for adherent that I've seen before include "Follower, partisan" , "Supporter; sticking" , "One believes in and helps spread the doctrine of another" , "One supporting" , "Devotee" .)
'supporter' is the definition.
(I know that backer is a type of supporter)
This is the entire clue.
(Other definitions for backer that I've seen before include "Financial supporter" , "Person supporting another financially" , "Patron or supporter" , "'Supporter, usually provides finance (6)'" , "A supporter or a betting man" .)
(Other definitions for benefactor that I've seen before include "One provides bread" , "Patronising sort" , "One giving money to person/cause" , "One giving to worthy cause" , "charity supporter?" .)