ally

noun1 of 2

someone who supports, helps, or defends you

• “In this game, there are no allies but only enemies.”Tatoeba
• “An enemy of an enemy is not necessarily an ally.”Tatoeba

Sentences from Tatoeba show real usage. A word can have several meanings, so a sentence may use another one.

verb2 of 2

To unite, or form a connection between, as between families by marriage, or between princes and states by treaty, league, or confederacy.