| A | B |
| mis- | badly, not or wrongly |
| misspell | to spell wrongly or incorrectly |
| misplace | to put something in the wrong spot so you can't find it |
| misprint | to put something in writing wrongly or incorrectly |
| misunderstand | to not know the meaning of |
| misbehave | to conduct yourself in a bad way |
| misuse | to use something in the wrong way |
| misfortune | ill luck |
| mistreat | to handle roughly a person or animal or thing |
| misinform | to give the wrong information |
| mismanage | to not take care of something properly |
| non- | no or not |
| nonfat | not having any fat |
| nonstop | not making or having no steps |
| nonprofit | not seeking to make any gain |
| nonpoisonous | not having any poison within |
| nonpareil | without rival; unequaled |
| nonfiction | a kind of writing that is true or gives information, rather than a made up story |
| nonliving | dead or not made of living materials |
| nonsense | not making any sense, absurdity, meaningless |
| nonbreakable | unable to destroy; not able to put into pieces or broken |
| nonpartisan | not affiliated or influenced by one particular point of view or political party |
| pre- | before |
| predict | to tell about something before it happens |
| prepayment | to give money to someone before you actually have to pay for it |
| preexist | to come into being before something else |
| precede | to come before in time |
| preface | a part of a book that comes before the main part of the book |
| prefix | the part of a word that comes before the main or root word |
| prejudice | forming an opinion before you know something fully |
| prelude | a part, in music, that comes before the main musical composition; it can also mean an introductory event or action coming before a more important event or action |
| prenatal | before birth |
| prepare | to make ready beforehand |
| prevent | to keep from happening, as by some prior action |
| tri- | three |
| tricycle | a three wheeled vehicle |
| triple | a three base hit in baseball |
| triangle | a three sided figure |
| triplet | a group or set of one kind; one f three children born at one birth |
| triplicate | made with three identical copies |
| tripod | a three legged utensil, stool, table, or the like |
| triple time | a musical time or rhythm having three beats to the measure |
| trisect | to divide equally into three parts |
| triplane | an airplane with wings placed above each other in three levels |
| re- | back or again |
| retell | say again |
| replay | play something again |
| reuse | use again |
| retrain | train again |
| react | act in response to something |
| reunite | bring together again |
| restock | furnish new stock for |
| restate | say again |
| rerun | repetition of a recorded performance |
| restore | bring back into use or existence |
| dis- | away from, or opposing |
| disappear | can't be seen |
| disorder | not neat, messy |
| disarm | take away weapons from |
| disobey | refuse to follow orders from another |
| disfigure | take away the good appearance of, spoil the appearance |
| discolor | take the color from |
| disclose | uncover, take the cover from |
| disconnect | take the connection from |
| dishonest | not honest, opposing honesty |
| discontinue | to put a stop to, to cause to cease |