Committing no mistakes; consistently accurate.(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "unerring" in a sentence
"God is the sovereign King, the righteous Judge, and to him it belongs to administer justice; for, being a God of infinite knowledge, by him actions are weighed in unerring balances; and, being a God of infinite purity, he hates sin and cannot endure to look upon iniquity."
"What it has been the fashion to call their unerring instinct is after all infallible only as a certain great public functionary is, -- in theory; and their mistaken haste is too frequently nothing but a hurrying to their death."
"The fact is that a car which works all the time is displaying what Charles Babbage called the unerring certainty of machinery."