Prefixes PRE CENTI TRI con-, com-, cor-, col- Meaning Sample Words before Pretest, pregame One hundred Centimeter, century three Tricycle, triangle (there are 2 definitions) Connect, committee, correspond, collect WITH, TOGETHER RE again intra- repeat WITHIN intramurals inter- between international EN bring into or on Enlighten, encourage homo- SAME homogeneous out- more, to a greater degree outstanding anti- AGAINST Antifreeze, antiperspirant DIS Not, do the opposite of, apart or away disregard DE Do or make the opposite of, reverse, remove from defrost UN not or to reverse undo bi- TWO Bicycle, bifocals Ir-, il-, im NOT Irresistible, illogical, impossible E, ex OUT, OUT OF, OUTSIDE AWAY Eject, exhale mis WRONG, BAD Misuse, mistaken Root or Base Word Meaning Sample Words vers/vert TO TURN Reverse,vertebrae phon, phono SOUND phonics, phonograph cred TO BELIEVE incredible tain/ten-tent TO HOLD Contain, tenacious (it means stubborn), contents mis/mit TO SEND Transmit dic/dict TO SAY, TO SPEAK Dictator nym NAME synonym graph-y A LETTER , TO WRITE biography (there are 2 roots for this) means word, thought, study of in Greek biology -LOG, -LOGY Suffix (2 of them) Meaning able to be, can be Sample Words edible, notable Note: word becomes an adjective when added -IBLE, -ABLE -FUL full of Beautiful (2 of them) Ugliest, slowest, funniest -IEST, -EST Suffix added to show a superlative. Shows that something is the best or worst -LESS Without Clueless, senseless -Y Suffix meaning having the quality of the word it is added to brainy, chilly, jumpy, shiny -ER 1. When added to a verb, it changes the word to a noun 1. run+er=runner 2. tall+er=taller 2. Shows comparison (adjective) -ION A noun suffix. It makes abstract nouns. create---creation -PHOBIA intense fear of a certain thing hydrophobia ~A prefix is a word part added to the BEGINNING of a root or base word and it has MEANING. ~A suffix is a word part added to the END of a root or base word and it has MEANING.