You use prefixes daily, with the four most common ones (un-, re-, in-, dis-) making up more than 95% of prefixed words! Adding a prefix to a word can allow you to transform a word into its opposite or modify it in other ways. Keep reading to learn more about what prefixes are and how to use them effectively in your writing.
Prefixes are a type of morpheme that you add to the beginning of a word to change its meaning. This makes them fall under the “affix” umbrella. Most prefixes are one-syllable, but they can get up to three syllables.
Fun Fact: A prefix generally has the same meaning regardless of the base word it is attached to. For example, “semi-” means “half” whether it’s used in “semicircle” or “semiaquatic.”
When and How to Use Prefixes?
If you want to alter the meaning of a base word in a specific way, this is when you use a prefix.
You will often use them to express the opposite meaning or indicate the number, time, or location of a base word. If you want to shorten a phrase into a single word or take your writing to the next level, prefixes can also help.
However, be cautious about creating a double negative! When you add a negative prefix to an already negative word, the two negatives will cancel each other out – just like in math!
What Are the Spelling Rules for Prefix Words?
Adding a prefix can sometimes be confusing when it comes to spelling. In most cases, the spelling of the base word does not change when you add a prefix. This rule also applies even if the prefix ends with the same letter of the base word starts with (such as unneeded).
If the end of the prefix and the beginning of your base word start with the same vowel, you will add a hyphen in between. Proper nouns also take a hyphen when combined with a prefix (pro-Apple or pro-Samsung). Additionally, you will add a hyphen after the prefixes all-, ex-(former), and self-. However, this prefix spelling rule doesn’t apply to double e’s or o’s.
Tip: There are a few exceptions to each of these rules. Doing a quick search of the word you want to use is a great way to find the correct spelling.
Most Common Prefixes
Within the English language, there are a few prefixes you will find yourself running into over and over again. Here is an overview of the most commonly used prefixes grouped by their language of origin.
Old English Prefixes
While Old English is quite different from modern English in terms of grammar and pronunciation, many of the most common words you use in modern English have Old English roots.
You will find Latin prefixes in words of all types, from everyday terms like “submarine,” “automatic,” and “interrupt” to specialized academic and scientific vocabulary.
Here are four of the most common prefixes from Old French that you will still encounter.
Mis
Meaning
Word Examples
Bad, wrong, not
Misbehave, misinform, misspell
Mal
Meaning
Word Examples
Bad, badly
Malfunction, malnutrition, maltreat
En
Meaning
Word Examples
Put into, cover with
Encode, enrage, entomb
To make, make into
Endanger, enthrall, encase
Intensifier
Enable, encourage, endow
Sur
Meaning
Word Examples
Over, above
Surcharge, surface, surpass
Final Thoughts
As you can see, prefixes are essential. With prefixes, you can create the opposite meaning, intensify a meaning, and even specify a number, time, location, or manner!
