unmuzzled

verb (used with object), un·muz·zled, un·muz·zling.

1. to remove a muzzle from (a dog, cat, etc.).
2. to free from restraint, as speech or expression.

verb (tr)

1. to take the muzzle off (a dog, etc)
2. to free from control or censorship

adj.c.1600, from un- (1) “not” + past participle of muzzle (v.).