Unerring (adjective)

Not making mistakes; always accurate.

Origin:

Late 16th century: from un- (expressing negation) + erring, from old english ærran.

Examples:

1. Her unerring sense of direction was a valuable asset.
2. His unerring aim was impressive, hitting the bullseye every time.
3. Her unerring intuition was rarely wrong.
4. The scientist had an unerring ability to analyze complex data and find patterns.
5. The navigation system was unerring, guiding the ship through treacherous waters.