1st set of roots

ab

away (abrogate, abstain)

ambi

both (ambidextrous, ambivalent)

ambul

move or walk (ambulate, somnambulate)

ami

love (amicable, amity)

contra

against (contradict, contraposition)

cred

believe (credible, incredulous)

crypt

hidden (cryptic, decrypt, encrypt)

cycl

circle or ring (cycloid, cyclone, cyclotron)

dem

people (demagogue, democracy, demography)

derm

skin (dermatology, hypodermic)

dict

speak (edict, indict)

domin

master (dominant, domineering)

dur

hard (durable, endurance)

ego

self (alter-ego, egomaniacal)

esth

feeling (aesthetic, anesthetic)

extra

outside (extralegal, extraneous)

fid

faith (confident, fidelity)

flect

bend (deflect, genuflect)

flor

flower (efflorescence, florid)

fract/frag

break (fracture, fragile)

fug

run away (refugee, subterfuge)

gen

birth, production (general, genteel)

gram

something written (epigram, monogram)

graph

to write (bibliography, cosmography)

gress

to step, to go (digress, egress)

hetero

different (heterodox, heterogeneous)

homo

same (homogeneous, homologous)

idio

peculiar, distinct (idiom, idiosyncrasy)

judi

judge, lawyer (adjudicate, judicial)

ling

language (linguist, linguistics)

loqu

speak (colloquial, eloquent)

magn

large, great (magnanimous, magnitude)

mal

bad (malcontent, malevolent)

mut

change (immutable, permutation)