To break down a word and identify the root, it is helpful to first identify any affixes attached to the word. Prefixes and suffixes often modify root words, so removing these can reveal the root word and help you unlock the word’s meaning.
For example, “predated” has the prefix “pre-” (“before”) and the suffix “-ed,” which is used here to indicate the past tense. Removing the prefix and the suffix gives us the root word “datus,” or the past participle of “dare,” “to give,” in Latin.