WORD FAMILIES

One root. A family of words.

Connect words through shared components and learn them together.

51 word families · O

occult3 related words

hidden

occultism · occultist

occur3 related words

happen

co-occur · occur · reoccur

ocean6 related words

large sea

midocean · ocean · ocean-front

oct4 related words

eight

octane · octave · octet

octa2 related words

eight

octagon · octagonal

octo3 related words

eight

october · octogenarian · octopus

ode2 related words

path

diode · electrode

odont4 related words

tooth

periodontal · periodontitis

odor10 related words

smell

deodorant · deodorizer · malodor

ody5 related words

song

parody · prosody · threnody

office4 related words

place of work

back-office · in-office · office

official4 related words

authorized

non-official · official · semi-official

oft9 related words

often

oft-cited · oft-injured · oft-repeated

olig3 related words

few

oligarchic · oligarchy

olive3 related words

olive

olive · olive-drab · olive-green

olymp3 related words

mount olympus

olympiad · olympic · olympics

oma22 related words

tumor

carcinoma · cholesteatoma · glaucoma

omin4 related words

omen

abominable · abominate

omni10 related words

all

omnibus · omnidirectional · omnipresence

onco3 related words

tumor

oncogene · oncology

one-up2 related words

to gain an advantage over someone

one-upmanship · one-upsmanship

oner4 related words

burden

exonerate · exonerated · exoneration

ont2 related words

being

ontic · ontology

onym10 related words

name

anonymity · anonymous · antonym

opening3 related words

act of making open

opening · opening-game · opening-night

oper17 related words

work

inoperable · interoperable · opera

opposite3 related words

contrary

opposite · opposite-field · opposite-gender

opt10 related words

choose

adopt · adopting · adoption

optim12 related words

best

optimal · optimally · optimism

option3 related words

choice

local-option · option · optionally

orbit3 related words

path

exorbitant · orbit · orbital

order13 related words

arrangement

disorder · first-order · higher-order

ordin19 related words

order

coordinate · coordination · coordinator

orex2 related words

appetite

anorexia · anorexic

organo2 related words

organic

organochlorine · organophosphate

origin11 related words

source

aboriginal · original · originality

orium6 related words

place for

auditorium · natatorium · sensorium

ornitho2 related words

bird

ornithological · ornithologist

ortho10 related words

correct

orthodontia · orthodontic · orthodontics

orthodox3 related words

correct belief

orthodox · ultra-orthodox · ultraorthodox

oscill4 related words

to swing

oscillate · oscillation · oscillator

oss2 related words

bone

ossicle · ossify

ostent2 related words

show

ostentation · ostentatious

other4 related words

different

other · otherness · others

oto8 related words

ear

otolaryngologic · otolaryngologist · otolaryngology

ovi2 related words

egg

oviparous · ovipositor

ovul2 related words

egg

ovulate · ovulation

own4 related words

to possess

own · owned · owner

oxid9 related words

acid

oxidant · oxidation · oxidative

oxide3 related words

compound of oxygen

oxide · peroxide · superoxide

oxygen3 related words

chemical element

oxygen · oxygen-poor · oxygen-rich

Families include roots and modern derivations. These learning connections do not imply that every member has exactly the same historical origin.