| Suffix | Meanings | Sample Words and Definitions |
| -able | able to be | excitable, portable, preventable |
| -ac | pertaining to | cardiac, hemophiliac, maniac |
| -acity (-ocity) | quality of | perspicacity, sagacity, velocity |
| -ade | act, action or process, product | blockade, cavalcade, promenade, |
| -age | action or process | passage, pilgrimage, voyage |
| -aholic (-oholic) | one with an obsession for | workaholic, shopaholic, alcoholic |
| -al | relating to | bacterial, theatrical, natural |
| -algia | pain | neuralgia, nostalgia, |
| -an (-ian) | relating to, belonging to | Italian, urban, African |
| -ance | state or quality of | brilliance, defiance, annoyance |
| -ant | a person who | applicant, immigrant, servant |
| inclined to, tending to | brilliant, defiant, vigilant | |
| -ar | of or relating to, being | lunar, molecular, solar |
| a person who | beggar, burglar, liar | |
| -ard | a person who does an action | coward, sluggard, wizard |
| -arian | a person who | disciplinarian, vegetarian, librarian |
| -arium (orium) | a place for | terrarium, aquarium, solarium |
| -ary | of or relating to | literary, military, budgetary |
| -ate | state or quality of (adj.) | affectionate, desolate, obstinate |
| makes the word a verb (different pronunciation) | activate, evaporate, medicate | |
| -ation | action or process | creation, narration, emancipation |
| -ative | tending to (adj.) | creative, preservative, talkative |
| -cide | act of killing | homicide, suicide, genocide |
| -cracy | rule, government, power | bureaucracy, aristocracy, theocracy |
| -crat | someone who has power | aristocrat, bureaucrat, technocrat |
| -cule | diminutive (making something small) | molecule, ridicule, |
| -cy | state, condition or quality | efficiency, privacy, belligerency |
| -cycle | circle, wheel | bicycle, recycle, tricycle |
| -dom | condition of, state, realm | boredom, freedom, wisdom |
| -dox | belief, praise | orthodox, paradox |
| -ectomy | surgical removal of | appendectomy, hysterectomy |
| -ed | past tense | called, hammered, laughed |
| -ee | receiver, performer | nominee, employee, devotee |
| -eer | associated with/engaged in | engineer, volunteer |
| -emia | blood condition | anemia, hypoglycemia, leukemia |
| -en | makes the word a verb | awaken, fasten, strengthen |
| -ence | state or condition, action | absence, dependence, negligence |
| -ency | condition or quality | clemency, dependency, efficiency |
| -ent | inclined to performing/causing, or one who performs/causes | competent, correspondent, absorbent |
| -er | more | bigger, faster, happier |
| action or process | flutter, ponder, stutter | |
| a person who does an action | announcer, barber, teacher | |
| -ern | state or quality of | eastern, northern, western |
| -escence | state or process | adolescence, convalescence |
| -ese | relating to a place | Chinese, Congolese, Vietnamese |
| -esque | in the style of | Kafkaesque, grotesque, burlesque |
| -ess | female | actress, heiress, lioness |
| -est | most | funniest, hottest, silliest |
| -etic | relating to (makes the word an adj.) | athletic, energetic, poetic |
| -ette | diminutive (makes something smaller) | cigarette, diskette, kitchenette |
| -ful | full of | helpful, thankful, cheerful |
| -fy | make, cause (makes the word a verb) | amplify, falsify, terrify |
| -gam/gamy | marriage, union | monogam, polygamy |
| -gon/gonic | angle | hexagon, polygonic, pentagon |
| -hood | state, condition, or quality | childhood, neighborhood, motherhood |
| -ial | relating to | celestial, editorial, martial |
| -ian | relating to | Martian, utopian, pediatrician |
| -iasis | diseased condition | elephantiasis, psoriasis |
| -iatric | healing practice | pediatric, psychiatric, |
| -ible | able to be | audible, plausible, legible |
| -ic/ical | relating to, characterized by | analytic/al, comic/al, organic |
| -ile | relating to, capable of | agile, docile, volatile |
| -ily | in what manner | sloppily, steadily, zanily |
| -ine | relating to | canine, feminine, masculine |
| -ing | materials | bedding, frosting, roofing |
| action or process | dancing, seeing, writing | |
| -ion | action or process | celebration, completion, navigation |
| -ious | having the qualities of, full of | ambitious, cautious, gracious |
| -ish | relating to, characteristic | apish, brutish, childish |
| -ism | state or quality | altruism, despotism, heroism |
| -ist | a person, one who does an action | artist, linguist, pianist |
| -ite | resident of, follower, product of | suburbanite, luddite, dynamite |
| -itis | inflammation, preoccupation | appendicitis, tonsillitis, frontrunneritis |
| -ity | state, condition, or quality | abnormality, civility, necessity |
| -ive | inclined to; quality of; that which | attractive, expensive, repulsive |
| -ization | act or process of making | colonization, fertilization, modernization |
| -ize | cause, treat, become | antagonize, authorize, popularize |
| -less | without | fearless, helpless, homeless |
| -let | version of | booklet, droplet, inlet |
| -like | resembling, characteristic | childlike, homelike, lifelike |
| -ling | younger or inferior | duckling, underling |
| -loger/logist | one who does | astrologer, cardiologist, chronologer |
| -log | speech | dialog, monolog, |
| -ly | in what manner | badly, courageously, happily |
| -ment | action, result | movement, placement, shipment |
| -ness | state or quality (makes a noun) | kindness, shyness, weakness |
| -oid | resembling | humanoid, tabloid, hemorrhoid |
| -ology | study of, science of | anthropology, archaeology, biology |
| -oma | tumor, swelling | carcinoma, osteoma, hematoma |
| -onym | name, word | synonym, antonym, homonym |
| -opia | eye defect | myopia, nyctalopia, hyperopia |
| -opsy | examination | biopsy, autopsy, necropsy |
| -or | a person who | inventor, legislator, translator |
| -ory | relating to | armory, dormitory, laboratory |
| -osis | process, diseased condition | diagnosis, prognosis, neurosis, psychosis |
| -ostomy/otomy | surgical | colostomy, lobotomy, craniotomy |
| -ous | full of | hazardous, humorous, wondrous |
| -path | one who engages in | homeopath, naturopath, psychopath |
| -pathy | feeling, diseased | sympathy, apathy, neuropathy |
| -phile | one who loves | bibliophile, audiophile, pyrophile |
| -phobia | abnormal fear of | acrophobia, claustrophobia, xenophobia |
| -phone | sound | homophone, telephone, microphone |
| -phyte | plant, to grow | zoophyte, cryptophyte, epiphyte |
| -plegia | paralysis | paraplegia, quadriplegia, hemiplegia |
| -plegic | one who is paralyzed | paraplegic, technoplegic, quadriplegic |
| -pnea | air, spirit | apnea, hyperpnea, orthopnea |
| -scopy/scope | visual exam | arthroscopy, gastroscopy, microscope |
| -scribe/script | to write | transcript, describe, manuscript |
| -sect | to cut | dissect, insect, bisect |
| -ship | state or condition of, skill of | authorship, citizenship, friendship |
| -sion | state or quality | confusion, depression, tension |
| -some | characterized by, group of | cumbersome, quarrelsome, foursome |
| -sophy/sophic | wisdom, knowledge | philosophy, theosophy, anthroposophic |
| -th | state or quality | depth, length, strength |
| -tion | state or quality | attention, caution, fascination |
| -tome/tomy | to cut | hysterectomy, epitome, tonsillotome |
| -trophy | nourishment, growth | atrophy, hypertrophy, dystrophy |
| -tude | state, condition or quality | fortitude, gratitude, magnitude |
| -ty | state, condition or quality | ability, honesty, loyalty |
| -ular | relating to or resembling | cellular, circular, muscular |
| -uous | state or quality of | arduous, tumultuous, virtuous |
| -ure | action, condition | closure, erasure, failure |
| -ward | specifies direction | backward, eastward, homeward |
| -ware | things of the same type or material | hardware, software, kitchenware |
| -wise | in what manner or direction | clockwise, lengthwise, otherwise |
| –y | made up of, characterized | brainy, fruity, gooey |
