uncompromising
1. [ adjective ] not making concessions
Synonyms: inflexible
Examples:

"took an uncompromising stance in the peace talks" "uncompromising honesty"

Related terms: compromising hard-line hard-line unyielding
Similar spelling:   uncompromisingly
  uncomplaining
  unsympathising
  uncomprehending
  uncomplainingly
  uncompetitive