Browse word lists organized by affix — 13 prefix groups (RE, UN, PRE, DIS, OVER, SUB, SUPER, INTER, TRANS, MIS, ANTI, MULTI, POST) and 7 suffix groups (ER, LY, TION, MENT, ABLE, NESS, ITY). Each list includes etymology, words by length, Scrabble scores, and Wordle tips.
Word Finder →A prefix is added to the beginning of a word to create a new word with a different meaning. These 13 prefixes are among the most common in English.
A suffix is added to the end of a word to change its grammatical function or meaning. These 7 suffixes are the most common in English.
Recognizing prefixes and suffixes dramatically speeds up word game play. In Scrabble, knowing that RE- attaches to hundreds of verbs means you can quickly spot RE- hooks on existing board words. In Wordle, knowing that -ER, -LY, and -ED are common endings narrows your guesses faster. In crosswords, affix knowledge helps you decode obscure fill words you've never seen before.
The 13 prefixes and 7 suffixes on this page cover the majority of derived words in English academic and formal vocabulary. Master these and you'll recognize the structure of thousands of unfamiliar words immediately.