liberator

noun

lib·​er·​a·​tor ˈlibəˌrātə(r) 

-ātə-

plural -s

: one that liberates

came as a liberator against the … man, who for a century or two had imposed his military and economic will on these peoples

—Saturday Review

the aspect not simply of an earthly liberator but of a divine redeemer

—Maurice Samuel

Word History

Etymology

Latin, from liberatus + -or

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