Pronunciation: (un-ûr'ing, -er'-), [key]
1. not erring; not going astray or missing the mark: The captain set an unerring course for home.
2. undeviatingly accurate throughout; not containing any error or flaw: She gave an unerring recital of the day's events.
3. invariably precise or correct: unerring taste.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.