Hebrew and Greek Strong's Dictionary with all the definitions plus combined with every place that word is used in the definitions.
Complete index of every word used in both the Hebrew and Greek Strong's Dictionary in English Word order.
Hebrew and Greek Expanded Dictionary
infallible 5039 - tekmerion {tek-may'-ree-on}; neuter of a presumed derivative of tekmar (a goal or fixed limit); a token (as defining a fact), i.e. criterion of certainty: -- {infallible} proof.