Summary: The Latin root *dur* means "hard." This Latin root is the word origin of a good number of English vocabulary words, including en[*dur*]e, [*dur*]ing, and [*dur*]ation. The root *dur* is easily recalled via the word en[*dur*]e, for if you can en[*dur*]e a trial, you are "hard" enough to withstand its challenges.
