TOFEL / IBEC Word List
Note: These are not all the words but will give you a great start.
| abacus | autograph | concept | esophagus | incidentally | nuclei | relevant | substances | |
| absent | autumn | concession | essential | income | nucleus | reliable | substantial | |
| access | available | conditions | estimate | increase | obligation | rely | substitute | |
| access | avenue | conflict | ethnicity | incredible | oblong | remain | substitute | |
| accompany | aware | conjunction | evaluating | indeed | obnoxious | remarkable | succeed | |
| according | awkward | connection | evening | indefinite | obsessed | renaissance | suffering | |
| accurate | axiom | conquest | eventually | indicate | obsolete | renewable | suffrage | |
| achieve | bacteria | conscience | exactly | indication | obstruct | repeated | suggested | |
| acquire | baritone | consequence | excellent | industry | obtain | replacing | suitable | |
| active | bass | consequently | exchange | ineffective | obvious | representation | surprise | |
| adaptation | beetle | considerable | excitable | inefficient | occupation | require | sustained | |
| addict | beginning | consist | exciting | ineligible | occur | requirement | sweater | |
| adhere | beige | consonant | exclamation | inequality | octave | residential | symbol | |
| adhesive | benefit (from) | constant | exclude | inferred | octopi | resource | symbolize | |
| adjacent | benefiting | construct | exhausting | influential | octopus | respiratory | tangerine | |
| adjective | benign | container | exiting | information | option | respond | tangible | |
| adjourn | bicycle | contestant | exodus | infraction | orchard | restaurant | task | |
| adjustment | biography | continue | expect | inherit | ostrich | retain | taxes | |
| admission | biology | contribute | expelling | inquiry | otherwise | reverent | technique | |
| admitted | blizzard | controlled | expensive | insect | oxygen | revolution | technique | |
| adverb | bottom | convention | experience | insecure | palatial | rhythm | tenant | |
| advertisement | brace | convert (into) | explaining | instant | panel | ridiculous | tenor | |
| advocate | branches | convict | explanation | instruction | participate | rivalry | tentative | |
| aerobics | breakable | coordinate | exploration | insult | participation | role | tenth | |
| aerodynamic | breakfast | correspond | exponent | insurance | participle | route | terminology | |
| aeronautics | breathe | corresponding | external | interesting | particular | rubbing | terrier | |
| aerosol | brilliant | cougar | extract | internal | passive | running | terrified | |
| aerospace | bruise | coward | extravagant | internet | pathology | sacrificial | theology | |
| afraid | burglar | create | factor | interpretation | pelican | salmon | thermosphere | |
| afterwards | business | criminology | famous | interstate | perennial | sandwich | thorough | |
| agility | cacti | criticize | fantastic | intestine | performance | saturated | thousandth | |
| agreement | cactus | crucial | fashion | introduction | period | saucer | threatening | |
| ahead | cadence | cyclone | feline | investigating | perishable | sausage | throughout | |
| allow | calories | daisy | finance | invisible | permissible | scissors | thunder | |
| allowable | canine | debatable | financial | irritate | permitted | scowl | thus | |
| alternate | canter | deception | flavor | item | persecution | secret | tolerable | |
| alto | capacity | declaration | flexible | jewelry | petroleum | secretary | tolerating | |
| alumni | capital | dedication | forbidding | journeyman | pharmacy | sector | topical | |
| alumnus | captain | defendant | forecast | killed | picnic | secure | torrential | |
| ambidextrous | carbohydrates | define | forgetting | knitting | pilgrim | select | tortoise | |
| ambient | cartographer | delegate | formation | laughter | plaster | sense | trace | |
| ambiguity | cartoon | delight | fortress | launch | playwright | separate | track | |
| ambition | casual | delivery | fracture | lavender | plentiful | serious | transfer | |
| ambivalent | category | demonstrate | freeze | legislation | plugged | servant | transform | |
| ambulance | cathedral | dermatology | freight | leopard | plunge | settlement | trend | |
| analyses | caught | description | frequent | level | politician | shelf | trilogy | |
| ancestor | centennial | design | frustrating | library | porcupine | shelves | trinity | |
| ancient | certificate | desirable | function | limiting | possible | significant | triple | |
| animation | chapter | details | function | lizard | powerful | silent | trophy | |
| anniversary | chief | developing | fungi | locate | practice | similar | troposphere | |
| annual | choreography | digestive | fungus | location | precise | single | trouble | |
| antelope | chromosome | dimensional | furthermore | logic | predictable | situation | trout | |
| anthropology | chronology | dioxide | galaxy | logical | preferable | skunk | tumble | |
| antibiotic | circumstantial | disadvantage | gallop | loyal | prejudice | slamming | turquoise | |
| antibody | cliff | disappoint | gaseous | magenta | preposition | smile | turtle | |
| antidote | climb | disapprove | gauge | major | prescription | sociology | typhoon | |
| antifreeze | clinic | discard | gene | majority | printed | soldiers | underline | |
| antiseptic | cloudiness | disengage | generation | mall | process | solemn | unicycle | |
| antisocial | cluster | dislike | genuine | mandatory | production | solidify | uniform | |
| apostrophe | coast | disposal | geometry | mansion | prohibited | solstice | universe | |
| apparently | collapse | dissatisfied | giant | matter | projection | solution | unusual | |
| appearing | collate | dissolve | gopher | maximise | prompt | someone | upsetting | |
| applicant | colleague | distinct | graduate | measuring | pronouncing | soprano | valley | |
| application | collide | distinct | graphic | media | property | source | vanish | |
| appreciate | collision | distinguishable | graphite | melody | proportion | southern | various | |
| apprentice | colonel | divisible | greatest | melon | prospect | spaghetti | vary | |
| approach | colony | doctor | grinned | merciless | protein | specific | velvet | |
| approximate | column | domination | grumble | mesosphere | provide | spectacle | veritable | |
| archaeology | comet | dozen | gullible | meteorology | psychological | speculating | vertical | |
| archery | comic | duplex | headache | methodology | psychology | spherical | victory | |
| arrive | comma | duplicate | heritage | migration | publicity | sprint | virus | |
| article | comment | eagle | hesitate | millennium | purchase | standard | visible | |
| articulate | commercial | editing | hippopotamus | millionth | pursue | statement | visual | |
| ashamed | commission | effect | horizon | minimise | quadrangle | station | vocabulary | |
| aspect | committee | elasticity | horrible | misconception | quadrant | status | volume | |
| assist | committing | element | hospital | modern | quadruple | stomach | volunteer | |
| assistant | communication | elf | human | molecule | quarrel | stopping | voyage | |
| associate | compact | elves | hundredth | monitor | quartet | straight | walrus | |
| astrology | companion | emphasise | hurricane | motion | questionable | strange | wane | |
| astronaut | company | encounter | hurry | museum | racial | stratosphere | webbed | |
| astronomical | comparison | engage | hydrogen | mustard | radio | stretched | western | |
| astrophysics | compensate | enjoy | hyena | mythology | realize | stringent | whisper | |
| atmosphere | compensate | entered | identical | nautical | recent | structure | winning | |
| attribute | competition | entering | identify | navigation | recession | student | wolf | |
| audible | complaint | entire | ignorant | necessary | reduction | studio | wolves | |
| audio | completely | entrance | ignore | needle | referred | subdivision | wonder | |
| audit | compliant | environment | impartial | noisily | refraction | subheading | wouldn’t | |
| audition | component | equine | impatient | noodle | refrigerator | submarine | wound | |
| auditor | composite | equinox | imply | northern | register | submerge | wrote | |
| auditorium | compound | equipping | improvement | notable | regrettable | submission | yeast | |
| auditory | comprehensible | erode | improving | notation | regretting | subordinate | zoology | |
| authenticity | concentrate | error | inaccurate | notify | rehearse | subscribe | ||
| autobiography | concentration | escape | inadequate | novel | reindeer | subscription |
