Menu

Root Words, Roots and Affixes

By: Elaine K. McEwan
Familiarity with Greek and Latin roots, as well as prefixes and suffixes, can help students understand the meaning of new words. This article includes many of the most common examples.

Introduction

Many English words are formed by taking basic words and adding combinations of prefixes and suffixes to them. A basic word to which affixes (prefixes and suffixes) are added is called a root word because it forms the basis of a new word. The root word is also a word in its own right. For example, the word lovely consists of the word love and the suffix -ly.

In contrast, a root is the basis of a new word, but it does not typically form a stand-alone word on its own. For example, the word reject is made up of the prefix re- and the Latin root ject, which is not a stand-alone word.

Common Latin and Greek roots

Download a copy of the Common Latin Roots chart below.

Common Latin Roots
Latin RootDefinitionExamples
ambibothambiguous, ambidextrous
aquawateraquarium, aquamarine
audto hearaudience, audition
benegoodbenefactor, benevolent
centone hundredcentury, percent
circumaroundcircumference, circumstance
contra/counteragainstcontradict, encounter
dictto saydictation, dictator
duc/ductto leadconduct, induce
facto do; to makefactory, manufacture
formshapeconform, reform
fortstrengthfortitude, fortress
fractto break fracture, fraction
jectthrow projection, rejection
judjudgejudicial, prejudice
malbadmalevolent, malefactor
matermothermaterial, maternity
mitto sendtransmit, admit
mortdeathmortal, mortician
multimanymultimedia, multiple
paterfatherpaternal, paternity
port to carryportable, transportation
ruptto break bankrupt, disruption
scrib/scribeto write inscription, prescribe
sect/secto cutbisect, section
sent to feel; to sendconsent, resent
spectto lookinspection, spectator
structto builddestruction, restructure
vid/visto see video, televise
vocvoice; to call vocalize, advocate


Download a copy of the Common Greek Roots chart below.

Common Greek Roots
Greek RootDefinitionExamples
anthropoman; human; humanityanthropologist, philanthropy
autoselfautobiography, automobile
biolifebiology, biography
chrontimechronological, chronic
dynapowerdynamic, dynamite
dysbad; hard; unluckydysfunctional, dyslexic
gramthing writtenepigram, telegram
graphwritinggraphic, phonograph
heterodifferentheteronym, heterogeneous
homosamehomonym, homogenous
hydrwaterhydration, dehydrate
hypobelow; beneathhypothermia, hypothetical
logystudy of biology, psychology
meter/metrmeasure thermometer, perimeter
microsmallmicrobe, microscope
mis/misohatemisanthrope, misogyny
monoonemonologue, monotonous
morphform; shapemorphology, morphing
nymnameantonym, synonym
phillovephilanthropist, philosophy
phobiafearclaustrophobia, phobic
phon soundphone, symphony
photo/phoslight photograph, phosphorous
pseudofalse pseudonym, pseudoscience
psychosoul; spiritpsychology, psychic
scopeviewing instrumentmicroscope, telescope
technoart; science; skilltechnique, technological
telefar offtelevision, telephone
thermheat thermal, thermometer

Affixes

One method of understanding the meanings of new words is to analyze the different parts of the word and the meanings of those parts. Many new words are formed by adding an affix to the beginning or end of a Latin or Greek root or root word. When affixes are added to the beginning of roots or root words, they are called prefixes For example, the most common prefix is un-, which meant not oropposite of. If you add un- to the word happy, the new word becomes unhappy, which means not happy. When affixes are added to the end of roots or root words, they are called suffixes. The most common suffixes are -s and -es, which mean more than one (or the plural) of the word. Adding -es to wish, changes the meaning o the word to more than one wish.

Download a copy of the Common Prefixes chart below.

Common Prefixes
PrefixDefinitionExamples
anti-againstanticlimax
de-oppositedevalue
dis-not; opposite ofdiscover
en-, em-cause toenact, empower
fore-before; front offoreshadow, forearm
in-, im-inincome, impulse
in-, im-, il-, ir-notindirect, immoral, illiterate, irreverent
inter-between; amonginterrupt
mid-middlemidfield
mis-wronglymisspell
non-notnonviolent
over-over; too muchovereat
pre-before preview
re-again rewrite
semi-half; partly; not fullysemifinal
sub-undersubway
super-above; beyondsuperhuman
trans-acrosstransmit
un-not; opposite ofunusual
under-under; too littleunderestimate


Download a copy of the Common Suffixes chart below.

Common Suffixes
SuffixDefinitionExamples
-able, -ibleis; can beaffordable, sensible
-al, -ialhaving characteristics ofuniversal, facial
-edpast tense verbs; adjectivesthe dog walked,
the walked dog
-enmade ofgolden
-er, -orone who;
person connected with
teacher, professor
-ermoretaller
-estthe mosttallest
-fulfull ofhelpful
-ichaving characteristics ofpoetic
-ingverb forms;
present participles
sleeping
-ion, -tion, -ation,
-tion
act; processsubmission, motion,
relation, edition
-ity, -tystate ofactivity, society
-ive, -ative,
-itive
adjective form of noun active, comparative,
sensitive
-lesswithout hopeless
-lyhow something islovely
-mentstate of being; act ofcontentment
-nessstate of; condition ofopenness
-ous, -eous, -ioushaving qualities ofriotous, courageous,
gracious
-s, -esmore than onetrains, trenches
-ycharacterized bygloomy
McEwan, E.K. (2008). The reading puzzle: Word analysis. Thousand Oaks, CA: Corwin Press.

Reprints

You are welcome to print copies for non-commercial use, or a limited number for educational purposes, as long as credit is given to Reading Rockets and the author(s). For commercial use, please contact the author or publisher listed.

Comments

Those who don't think the lists were sufficient because it didn't help them complete their homework need to grow up. You're right. The lists here aren't the most comprehensive lists you can find online, but this website is for teaching kids to read and those who struggle with reading to read better.You need more roots, suffixes, and affixes so you can finish your homework? Don't rely on someone else to do your work for you. Use a dictionary.

I have found that many roots can also be prefixes or suffixes. Is that correct?

to jbi moved recently and am not in possesion of a dictionary for the time being because it got lost

May be seen as a piece of long road to best learning of english and other languages

Add comment

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.
By submitting this form, you accept the Mollom privacy policy.
Sign up for our free newsletters about reading
Advertisement
Reading Blogs

Reading Blogs

Start with a Book: Read. Talk. Explore.
"I'm wondering what to read next." — Matilda, Roald Dahl