Synonyms & Antonyms of ally
ally

1. (Noun) a person or group who helps and supports another

- The two countries remain strong allies.
Synonyms
associate
partner
supporter
friend
colleague
confederate
affiliate
collaborator
accessory
accomplice
backer
helper
assistant
comrade
fellow
companion

2. (Verb) to join with another group, country, etc. in order to support them

- The two kingdoms allied during the war.
Synonyms
unite
join
combine
collaborate
cooperate
side
affiliate
league
associate
confederate
merge
link
marry
join up
join forces
join together
band together