Unerring

• (a.) Committing no mistake; incapable or error or failure certain; sure; unfailing; as, the unerring wisdom of God.
Found on http://thinkexist.com/dictionary/meaning/unerring/

unerring

unerring, unerringly 1. Unfailingly accurate or correct. 2. Committing no mistakes; consistently accurate.
Found on http://www.wordinfo.info/words/index/info/view_unit/758/2
No exact match found