Prefixes

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Prefixes
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Prefixes

• A prefix is a part of a word that goes in front
  of the word and it changes its meaning

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re- means again

• Redo do again
• Reread read again
• Repaint paint again
• Review view again
• Rewrite write again
• Replace place again
• Readjust adjust again
• Replay play again

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over- means too much

• Overtake take too much
• Overdo do too much
• Overheat heat too much
• Overtime too much time
• Overcharge charge too much
• Oversee see too much
• Overproduce produce too much

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Trans- across

• Transatlantic across the Atlantic
• Transportation across places
• Transplant take a plant across
• Transport move across
• Transfer across places
• Transform across forms
• Transmission across mission

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anti- means against

• Antibiotics against life
• Antiwar against war
• Anticancer against cancer
• Anticavities against cavities
• Anticorruption against corruption

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mid- means middle

• Midair in the middle of the air
• Midbrain in the middle of the brain
• Midafeternoon in the middle of the afternoon
• Midnight in the middle of night
• Midmorning in the middle of the morning
• Middleman a man in the middle
• Midway in the middle of the way

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under- means below

• Underachiever below achieving
• Underwear below wear
• Undercover below cover
• Underground below ground
• Understand below standing
• Underwater below water

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Vice- means second in line

• Vicepresident second after president
• Viceprincipal second after principal

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em- and en mean cause to

• Empty caused to become not filled
• Embalm caused to have balm
• Embed caused to be covered
• Embark caused to be shipped
• Entrap caused to be trapped
• Enrich caused to be rich
• Endure cause to last

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post-, means after

• Postwar after the war
• Postfracture after fracture
• Postdive after dive
• Postexercise after exercise

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pre-, means before

• Preschool before school
• Precook before cooking
• Prewrite before writing
• Preseason before season

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uni-, means one

• Unicycle one wheel
• Uniform one form
• Unibrow one brow

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bi-, means two

• Bicycle two wheels
• Bipolar two poles or sides
• Billion two millions

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tri-, means three

• Tricycle three wheels
• Triangle three angles
• Trillion three millions
• Triceratops three horns
• Trimester three months

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kilo-, means thousand

• Kilometer thousand meter
• Kilobyte thousand bytes
• Kilowatt thousand watts

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cent-, means hundred

• Centimeter a hundred meters
• Centipede a hundred legs
• century a hundred years
• Cent a hundred in a dollar

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deca-, means ten

• Decagon shape of ten sides
• Decameter ten meters
• Decade ten years

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poli-, means many

• Polygon shape with many sides
• Polytheist many gods (theos god)
• Polytechnic many techniques
• Polyphony many sounds (phonesound)

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penta-, means five

• Pentagon shape of five sides
• Pentatonic melody with five tones
• Pentathlon 5 sports athlete

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hexa-, means six

• Hexagon shape with six sides

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octa-, means eight

• Octagon shape with 8 sides
• Octopus animal with 8 arms

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dis-, un-, mean not

• Discover not covered
• Distract not in tract
• Display not for play
• Disarm not armed
• Uncovered not covered
• Unmatched not matched
• Unfit not fitted

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im- means notits used when words start with m-
or p-

• Impossible not possible
• Impersonate not the person
• Immobile not mobile
• Impose not to pose
• Impersonal not personal

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ir- means notits used when words start with r-

• irresponsible not responsible
• irregular not regular
• Irreverent not reverent
• Irredeemable not redeemable
• Irreparable not reparable

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il- means notits used when words start with l-

• illegal not legal
• illogical not logical
• illiterate not literate (cant read)

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in- means notits used when words dont start
with m- or p-

• indestructible not destructible
• Invincible not vincible
• Indistinct not different

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In- means into

• Input put in
• Intake take in
• Inlet let it

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mis- means wrong

• Mislay wrongly layed
• Misplace wongly placed
• Misprint worngly printed
• Mismatched wrongly matched
• Misfit wrongly fitted
• Misplay wrongly played
• Mistake wrongly taken

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ambi- means both

• Ambidextrous writes with both hands
• Ambivalent has both values

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sub- means under

• Subway under the way
• Submarine under the sea
• Substitute under power
• Sub conscious under conscience
• Substructure understructure