Prefixes and Suffixes Prefixes and suffixes are grammatical “affixes” (prefixes come before the root word, and suffixes come after). In very simplistic terms, prefixes change the meaning of words, and suffixes change their form (including plural, tense, comparative, and part of speech). Prefixes – Change the Meaning of Words Some of the most common prefixes are: Prefix unredisinternonprepostpolysubco- Meaning not again not, undo between not before after many under together Examples unhappy, unsuccessful, unable redo, return, reappear disappear, disgrace, discontinue International, internet, intermission nonsense, nonfiction, nonviolent predawn, prefix, precaution postpone, postscript, postwar polygamy, polyester, polyglot subterranean, submarine, subordinate cooperate, collaborate, coordinate Suffixes – Change the Form of Words Some of the most common suffixes are: Form Noun Suffix -age -ence -ant -arium -tion -cy -dom -eer -ectomy Meaning action or process state or quality of one who place for state or quality of state or quality of state or quality of person surgical removal of Examples marriage, voyage, pilgrimage violence, absence, reticence servant, immigrant, assistant aquarium, planetarium, auditorium starvation, inspiration, tension accuracy, bankruptcy, conspiracy freedom, boredom, wisdom engineer, puppeteer, auctioneer tonsillectomy, appendectomy -ent -eur -hood -i -ism -wright -ology Adjective -able -acious -ant -ative -ic -y Verb -ble -ed -en -ify -ize Adverb -ly -ward -ways one who one who state or quality of plural doctrine of one who works with study of Is, can be inclined to be inclined to be inclined to be characteristic of characteristic of repeated action past tense made of to make to make resembling direction manner superintendent, resident, regent chauffeur, masseur childhood, falsehood, neighborhood alumni, foci, syllabi capitalism, socialism, patriotism playwright, shipwright biology, etymology, psychology comfortable, durable, perishable audacious, loquacious, spacious vigilant, pleasant, defiant demonstrative, talkative, pejorative comic, poetic, historic fruity, sunny, chewy stumble, squabble, mumble wanted, hated, looted strengthen, fasten, frighten terrify, falsify, vilify standardize, computerize, pulverize slowly, kindly, seriously forward, backward, onward sideways, crossways Examples of words broken down by roots/prefixes/suffixes: / below sub atom ic | \ atom (a=not; tom=cut) relating to the science of Subatomic means: relating to particles smaller than an atom. small micro / econom | household management, thrift ics \ scientific or social system Microeconomics refers to: the study of smaller components of a national economy such as individual businesses or consumers. pseudo scientif ic / | \ false knowledge having characteristics of Pseudoscientific refers to: methods or theories based on faulty scientific procedures or lacking supporting evidence. super cali fragilistic expiali docious / | | | \ above beauty delicate to atone educable In the movie Mary Poppins, this word is defined as “something to say when you have nothing to say.” But using knowledge of prefixes/suffixes, it could be defined as: atoning for educability through delicate beauty. For more information on roots, prefixes, suffixes, and how words are formed, go to: www.Prefix.Suffix.com. There’s even a root word search engine to help you understand a word’s meaning. Any good dictionary will also have words broken down into their individual components.