Latin Word Roots
The building blocks of English vocabulary. Every root below traces a word back to its Latin, Greek, or older origin — follow a root to see every word that grew from it.
Latin (5848)
occupō
1
occurrere
3
occurrō
1
occāsiō
1
octō
1
Octōber
1
octōgēnus
1
octōgēnārius
1
oculus
1
odium
2
odor
1
oeconomia
1
oeconomicus
2
offendere
3
offendo
1
offensa
2
offerre
1
offerō
1
officium
7
officiālis
1
olere
2
oleum
1
olfacere
1
Olympias
1
olēre
1
olīva
1
omen
2
ominosus
1
omittere
1
omitto
1
omnis
1
onerosus
1
onus
2
opacus
2
opera
1
operandum
1
operari
4
operativus
1
operire
1
operātiō
1
operātor
1
operātus
1
opponere
2
oppono
1
opportunus
3
oppositus
1
oppressiō
1
opprimere
2
opprobrium
1
oppōnēns
1
oppōnō
1
ops
1
optare
3
optimus
1
optio
1
optiō
1
opulentia
1
opulentus
1
opus
3
opīniō
1
oraculum
2
orare
5
orbis
2
orbita
2
orchis
1
ordinare
3
ordiri
1
ordo
6
ordō
1
organicus
1
organizare
2
organum
2
orgia
1
oriens
1
orientālis
1
origo
3
oriri
4
ornamentum
1
ornare
4
ornāre
1
orīgō
2
orīrī
1
os
5
oscillare
1
oscillum
1
osculari
1
osculatio
1
osculum
2
ostendere
3
ostensus
1
ostentare
1
ostentatio
1
otiosus
1
otium
1
ovis
1
ovum
3