Prefixes in English: What are Prefixes?

What are prefixes? A prefix is added to the start of a word to change its meaning. Prefixes are not words by themselves and therefore they cannot stand on their own. For example: re- means again, un- means not, pre- means before, dis- means the opposite, im- means not, non- means not, mis- means wrong... In these examples the prefixes are in bold. Check out our prefixes infographic below.

Prefix Sentence Examples

Practice prefixes in the sentences below. See how prefixes change the meanings of words. Test yourself and see if you can understand the meaning of each prefix. Have a go and make your own sentences with the prefixes poster.

Prefixes	Meaning	Examples
Anti- Bi- Co- Dis- Fore- Im- In- Inter- Intra- Mid- Mis- Non- Pre- Re- Sub- Uni-	against two together opposite or not before opposite or not opposite or not between inside or within middle wrong without before again below one	antidote, antihero, antibiotic bicycle, binoculars, biped co-exist, cooperate, co-pilot disadvantage, disapprove foremost, forecast, forehead impossible, impotent incomplete, incorrect international, interchange intramural, intravenous midpoint, midnight, midterm misfit, mistake, misspelled nonsense, nonfiction prefix, precaution, preview reconstruct, revisit, review substandard, submarine unicycle, university, unicorn

Prefix Games and Worksheets

Looking for more resources related to the prefixes? Check out our comprehensive list of worksheets and video games. Download worksheets and play interactive games for free.

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