Words similar to infallible

Example sentences for: infallible

How can you use “infallible” in a sentence? Here are some example sentences to help you improve your vocabulary:

Although the FBI considers mitochondrial DNA tests virtually infallible, many anthropologists doubt their accuracy.
Owing to my being unable to find the full bibliographical information for it in my infallible library cataloguing system, I cannot provide more than the fact that a book published several years ago by Scarecrow Press, Slang and Jargon of Drugs and Drinks, by R. A. Spears, was recalled when I saw the Death Dictionary: they are similar only in that they are both thesauruses (in Roget's sense of the word--that is, they contain all sorts of direct and oblique references to the subjects they cover).
You must keep in mind that you are not directly watching an event, but rather are watching a produced and directed telecast of an event, manipulated by talented but not infallible professionals.
Nobody said the Nobel Committee was infallible.
Nevertheless, an almost infallible guide to current media usage.