Summary: Prefixes are key morphemes in English vocabulary that begin words. The prefix *pre-*, which means "before," appears in numerous English vocabulary words, for example: [*pre*]dict, [*pre*]vent, and [*pre*]fix! An easy way to remember that the prefix *pre-* means "before" is through the word [*pre*]vent, for when you come "before" something else to stop it from happening, you [*pre*]vent it.
