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100
thermometer, thermal, thermostat, thermos, thermodynamics, exothermic, hypothermia, centimeter, diameter, meter, barometer
to measure
100
dehydrate, hydrant, hydraulic, hydrogen, hydra, hydrate, hydrology, hydroplane, hydroponics, hydrangea
water
100
phonograph, phonetic, symphony, homophone, telephone, microphone, phonics, cacophony, phoneme
sound
100
biology, meteorology, archaeology, astrology, zoology, neurology, technology, psychology ology=?
study of
100
portable, transport, portfolio
to carry
200
graph, graphic, autograph, photography, graphite, biography, paragraph, bibliography, calligraphy, choreographer, seismograph
to write
200
microscope, telescope, periscope, stethoscope, scope, horoscope
to see (usually with a tool)
200
aster, asterisk, asteroid, astronomy, astronaut, astrology, astronomical, disaster
astr=star
200
vacant, vacuum, vacancy, vacation
empty
200
percent, cent, century, centipede
100
300
interoffice, interception, interact, interstate, interactive, interest, interrupt, intermission
between
300
unicycle, bicycle, cyclone, cyclic, cycle, recycle, cyclical, encyclopedia
Circle
300
fracture, fragment, fraction, refract, infraction, fragile, frail, fractal, diffraction frac/frag=?
to break
300
dictate, predict, dictation, dictionary, indicate, contradict, verdict, edict, abdicate, dictator, dedicate, diction, indict, jurisdiction, predicate, vindicate
to speak
300
manufacture, manual, manipulate, manifest, manicure, emancipate, maneuver, mandate, manage, manuscript
hand
400
telegram, diagram, grammar, epigram, monogram, program, anagram,
written
400
incredible, credit, accredited, credentials, credible, credence, incredulous, creed, discredit, credulous, cred=
to believe
400
traction, tractor, contract, attractive, retraction, abstract, distract, extract, subtract, intractable, attract, protract
to pull
400
reject, eject, injection, dejected, object, projectile, subject, trajectory, project, objective
to throw
400
pedal, pedestrian, pedestal, peddler, pedicure, centipede, impede, orthopedist, pedometer, biped
foot
500
luminous, luminary, illuminated, lucid, lumen, translucent, illustrate, illustrious, bioluminescence, luster, lackluster lum/luc=?
What is light?
500
synonym, homonym, antonym, anonymous
name
500
unison, sonata, sonic boom, sonnet, resonate son=?
sound
500
annual, anniversary, biannual, semiannual ann?
year
500
revive, survive, vivacious, vivid, convivial, immortal, mortality, mortician, mortified, mortuary viv/mort
live/death