11 Letter Words Starting with O and Containing IS

When you need a list of 11 letter words that start with O and contain IS, who you gonna call? WordList Finder! Word lists exactly like these 11 letter words are only a few quick finger taps away on our site. Dive into words that start with O or words with IS to find some more options — if you're feeling a little flexible.

11 letter words
obituarists
objectivise
objectivism
objectivist
obsoletisms
oecologists
oenologists
oenophilist
officialise
officialism
oligomerise
oligopolist
omniscience
oncogenesis
oncologists
ontogenesis
ontologists
onychitises
operatising
operettists
ophiologist
ophthalmist
opinionised
opinionises
opinionists
opisometers
opisthosoma
opportunism
opportunist
optimalised
optimalises
optologists
optometrist
orbicularis
orchardists
oreologists
organicisms
organicists
organisable
organisings
organistrum
orientalise
orientalism
orientalist
originalism
ornamentist
orthoepists
orthopedist
orthopraxis
orthoprisms
orthoptists
osteoclasis
osteologist
ostracisers
ostracising
ostrichisms
outdistance
outorganise
outpromised
outpromises
overfishing
overissuing
overnourish
overpoising
overpraised
overpraises
overprecise
overpromise
overutilise
oxidisation
oxygenisers
oxygenising
ozonisation