prefiksille
Prefiksille is a term that refers to a prefix in linguistics. Prefixes are a type of affix, which means they are a morpheme that is attached to a word stem to form a new word or word form. Unlike suffixes, which are added to the end of a word, prefixes are added to the beginning. The addition of a prefix can significantly alter the meaning of the base word, and sometimes its grammatical category.
For example, the prefix "un-" in English can change a word's meaning to its opposite, as in