A prefix is a word component that cannot exist alone. It appears at the outset of a word and alters its definition. For example, re- is a prefix that can be added to the word act to create a new term, respond.
Prefixes are morphemes that are added to the beginning of origins and basic words to alter their meaning. Prefixes are one of two types of affixes; suffixes, which appear at the conclusion of a base word, are the other.
Some root terms make logic on their own. Words can be broken down to separate their affixes, but core word components cannot be broken down further. For example, the term unwitting can be split down to the prefix