The main bulk of the words in the Squackle! Dictionary don’t follow these “root words” from mainly Greek and Roman words.  You can use these to make words to go into the Squackle! Dictionary if you want.

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phobia – fear of. Ex. agoraphobia, claustrophobia, xenophobia

phil, philo – love, lover of. Ex. philately, anglophile, fracophile

mis – hatred, hate. Ex. misogynists, misogamy

dys – bad, ill, difficult. Ex. dysentary, dyspeptic

eu – good, well. Ex. euphonious, euphoria

macro – large, big, long. Ex. macrocasm, macron

micro – small, tiny. Ex. microscope, microfilm

hetero – different. Ex. heterogeneous, heterosexual

homo – one, the same. Ex. homogon, homonym, homosexual

hyper – over, above, beyond the ordinary. Ex. hyptertension, hypglycemic

bio – life. Ex. biology, biography

geo – earth, ground. Ex. geology, geography

anti – against. Ex. antiestablishment, anti-Gore, anti-Bush, antipathy

pro – in favor of, for something. Ex. prochoice, prolabor

chron – time. Ex. chronology, chronic pain

auto – self. Ex. automobile, autograph, autobiography

gram, graph – writing. Ex. telegram, telegraphy, autograph, monogram

log, logue – words, speech or talking. Ex. monologue, dialogue

phon – hearing. Ex. telephone, phonics, cacophonous

poly – many, several. Ex. polyhedron, polygon, polyglot

mono – one, single. Ex. monochrome, monocle

pan – all. Ex. panacea, panoramic

bi – two. Ex. bicycle, bilingual, bisexual

semi – half of. Ex. semicircle, semicolon

logy – study of. Ex. biology, physiology, technology, astrology, theology

meter, metr – measure. Ex. baramoter, trigonometry

post – after. Ex. postscript

pre – before. Ex. preview, preliminary, prejudice

endo, em, en – within, put into, inside of. Ex. endocrine, enact,
empower

exo, ex – outside. Ex. exoskeleton, exhale

a, an – not, without. Ex. atypical, amoral

co, com, col – together, with. Ex. cooperation, colatteration,
communication

neo – new. Ex. neonatal, neophyte

psuedo – false, phony. Ex. pseudonym, pseudoscience

theo, the – God, religion. Ex. theology, theocracy

inter – between. Ex. interlude, intermission

per – outside. Ex. perimeter, periscope

tele – far, distant. Ex. telephone, television, telescope

sub – below, beneath. Ex. submarine, substandard

super – more, more than, above, beyond. Ex. Superman, Super Mario,
supervisor, supersedes

syn, sym – together, with. Ex. synonym, symbol

ante – before, in front of. Ex. antebellum

ad – to, toward. Ex. advance

cred – believe, trust. Ex. credulity, credit

contra, counter – opposed to, against. Ex. conrtaband, counterattack

therm – heat. Ex. themometer, themostat, thermal

terr – earth, land. Ex. terrain, terra firma

ness, tion – quality of, expressing action. Ex. goodness, commotion,
tension

astro – stars. Ex. astroturf, astronomy, astrology

anthro – human, man. Ex. anthropoid, anthropormorphic

hydro – water. Ex. hydrology, hydraulics, hydraphobia

hemo – blood. Ex. hemophilliac, benevelent

mal – bad, evil. Ex. malevolent, malodrous, malicious

cap – the head, the chief. Ex. capital, cap

equ – equal, the same as. Ex. equal, equidistant

extra, ultra – beyond, extreme. Ex. extra credit, ultra

fid – faith, trust. Ex. fidelity, confidence

multi – many, numerous. Ex. multiplayer, multimillionaire

omni – all. Ex. omnipotent, omnivore

path – feelings, emotions. Ex. sympathy, apathy

psych – mental, spirit. Ex. psychologist, psycho

gen – birth. Ex. gender, generations, genesis

mor, mort – death. Ex. mortician, morturary, immortal

non – not. Ex. noncomformist, nonpartisan

ob, op – against, anti. Ex. opponent, obstacle

re – again. Ex. redo, restate, renew

de – down, away from, separation. Ex. demote, deconstruct

man – hand. Ex. manuscript, manicure

aud – hear. Ex. audible, auditorium

dic – say, tell, speech, wording. Ex. diction, dictionary, dictate

spec – seeing, to look.Ex. spectacle, speculate, inspect

ambi – both. Ex. ambidextrous, ambiguous

uni – one. Ex. unibrow, unicorn, unicycle

ten – to hold. Ex. detention, tenant, tentacle

pos – place. Ex. position, posture, positive, deposit

intra, intro – inside, within. Ex. introvert, intrastate

fin – end. Ex. final, fin, finished, finale, finals

fore – before. Ex. before, foretell, forecast

dia – through. Ex. diameter, diagram, diagonal

il, im, in, ir – not, the opposite of. Ex. illegal, immoral, indecent,
irresponsible

se – apart, apart from, away. Ex. segregate, separate, selected

temp – time. Ex. tempo, tempus fugit, temporary

trans – across, change to. Ex. transistion, transform, translation,
transport

un – not. Ex. unfair, unlatched, unusual

ver – true. Ex. verocity, verify, verdict

vis, vid – to see, to provide. Ex. visual, visible, video

voc, vok – to call, voice. Ex. provoke, vocal

bell – war. Ex. rebellious, bellicose, antibellum

bon, boun – positive thing, good. Ex. bountiful, bonjour, bonus

iso – uniform, equal. Ex. isotope, isosceles, isotherm

mega – large, great. Ex. megalopolis, Mega Man, megaton

able, ible – capable of, condition of. Ex. reliable, edible, irritable

dermis – skin. Ex. epidermis

er, or, ist – person, who. Ex. terrorist, dentist, doctor

ful, out – full of. Ex. wonderful, poisonous, hilarious, wonderful

ism – belief. Ex. buddhism, cultism, cannibalism

itis – inflammation. Ex. laryngitis, arthritis

less – without. Ex. thoughtless, fearless