Search Result for "liberator": 
Wordnet 3.0

NOUN (1)

1. someone who releases people from captivity or bondage; 



The Collaborative International Dictionary of English v.0.48:

Liberator \Lib"er*a`tor\ (l[i^]b"[~e]r*[=a]`t[~e]r), n. [L.]
   One who, or that which, liberates; a deliverer.
   [1913 Webster]


WordNet (r) 3.0 (2006):

liberator
    n 1: someone who releases people from captivity or bondage [ant:
         captor, capturer]