Root Words:
| Root | Meaning | Examples |
|---|---|---|
| audi | hear | audio, audience |
| bene | good | benefit, benign |
| bio | life | biology, biography |
| chrono | time | chronology, synchronise |
| contra | against | contradict, contrast |
| cred | believe, trust | credential, incredible |
| deca | (multiply by) ten | decade, decagogue |
| deci | (divide by) ten | decimate, decimetre |
| dem | people | democracy, demographic |
| dict | speak | dictate, verdict |
| eco | habitat | ecology, ecosystem |
| extra | outside of, beyond | extraordinary, extrovert |
| fact | make | factory, manufacture |
| fin | end, limit | final, confine |
| gen | birth | gene, generation |
| geo | earth | geography, geology |
| gram | record | telegram, electrocardiogram |
| graph | write | autograph, graphic |
| homo | like, similar | homogeneous, homonym |
| hyper | over, beyond | hyperactive, hyperbole |
| infra | below, after | infrared, infrasonic |
| kilo | thousand | kilogram, kilometre |
| logy | study of | biology, geology |
| macro | large | macroscopic, macroeconomics |
| Root | Meaning | Examples |
|---|---|---|
| mal | evil, badly | malnourished, malevolent |
| mega | large | megawatt, megabyte |
| meter | measure | thermometer, kilometre |
| micro | small | microbe, microscope |
| mis, mit | send | missile, transmit |
| neo | new | neoclassical, neophyte |
| nou, nov | new | novice, renovate |
| octo | eight | octogenarian, octopus |
| omni | all | omnivorous, omnipotent |
| pan | all, entire | pandemic, pantheon |
| para | beyond, outside of | paradox, paranormal |
| phil | love | philosophy, bibliophile |
| phobia | fear of | claustrophobia, xenophobia |
| photo | light | photograph, photosynthesis |
| port | carry | transport, portable |
| proto | first | prototype, proton |
| pseudo | false | pseudonym, pseudo-science |
| psych | mind, soul | psychiatry, psychology |
| quadr | four times | quadriceps, quadrangle |
| retro | backwards, behind | retrofit, retrograde |
| scope | observe, watch | telescope, microscope |
| scrib, script | write | scribble, manuscript |
| sens, sent | feel | sensation, sentiment |
| sym, syn | together, similar | symmetric, synonym |
| tele | far away | television, telescope |
| theo | god | theology, atheist |
| therapy | to nurse, care for | hydrotherapy, aromatherapy |
| ultra | beyond | ultrasound, ultraconservative |
| vid, vis | see | video, visible |
Exercises:
genetic — gen
paragraph — graph
predict — dict
uncountable — count
airport — port
dictator — dict
admit — mit
photon — phot
kilobyte — kilo
megapixel — mega
B. Two words formed using each root
| Root | Words |
|---|---|
| 1. phone (sound) | telephone, microphone |
| 2. temp (time) | temporary, contemporary |
| 3. alter (other) | alternate, alteration |
| 4. therm (heat) | thermometer, thermal |
| 5. pater (father) | paternal, patron |
| 6. mono (one) | monologue, monorail |
| 7. aqua (water) | aquarium, aquatic |
| 8. cent (hundred) | century, centennial |
| 9. voc (to call) | vocal, vocabulary |
| 10. act (to move/do) | action, activity |
| 11. multi (many) | multiple, multicultural |
| 12. astra (star) | astronomy, astronaut |
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