A prefix is an affix which is placed before the stem of a word. [1] Particularly in the study of languages, a prefix is also called a preformative, because it alters the form of the word to …

There are no absolute rules for when to use a hyphen or when to write a prefixed word as one whole word (see the examples in the table). A good learner’s dictionary will tell you how to …

What are prefixes, suffixes, and combining forms? Prefixes and suffixes are both kinds of affixes. That is, they are word parts that attach to the beginning or end of a word or word base (a word …

Prefixes are an essential part of English vocabulary. They are added to the beginning of a word to change its meaning. Learning prefixes will help you expand your vocabulary, understand word …

A prefix comes before the base, as in rewrite meaning to do again, while a suffix comes after the base, as in writer meaning a person who writes. When we learn to notice these parts, longer …

What is a prefix? Prefixes are morphemes (specific groups of letters with particular semantic meaning) that are added onto the beginning of roots and base words to change their meaning.

May 18, 2025 · Prefixes are letters at the start of words that change their meanings. Knowing prefixes can help us understand new words and sometimes shows the opposite meaning. …

Jun 12, 2025 · A prefix is a letter or group of letters that are added to the beginning of a word to alter its meaning. For example, the prefix “co-” means “together.”

Dec 14, 2025 · The chosen prefixes won the vote in part because they start with the only two letters left in the alphabet that are not already used in measurement. The b for “bronto” is …

A prefix is affix that's added in front of a word and often changes the meaning of it. Common prefixes include re-, un-, and mis-.