11-Letter Words Starting With "o"

There are a total of 1077 11-letter words starting with the letter 'o', and the number may vary in different dictionaries. You can specify the dictionary and order.

• opportunity ₂₁
• obligations ₁₈
• observation ₁₉
• outstanding ₁₇
• operational ₁₆
• orientation ₁₃
• occupations ₂₂
• obstruction ₁₉
• originating ₁₇
• observatory ₂₀
• overlapping ₂₅
• occurrences ₂₂
• overwhelmed ₂₅
• oscillation ₁₇
• originality ₁₇
• overlooking ₂₃
• objectivity ₃₂
• objectively ₃₃
• obstructive ₂₂
• oscillating ₁₉
• obliterated ₁₆
• overpayment ₂₄
• overflowing ₂₅
• ontological ₁₉
• obstructing ₂₁
• overcrowded ₂₃
• overhanging ₂₃
• oscillatory ₁₈
• outnumbered ₂₁
• osteopathic ₁₉
• oscillators ₁₆
• outsourcing ₁₉
• origination ₁₅
• obstetrical ₁₈
• oxygenation ₂₄
• observances ₂₂
• omnipotence ₂₂
• overarching ₂₃
• overheating ₂₀
• operatively ₂₁
• orthography ₂₂
• overturning ₂₀
• overpowered ₂₂
• oppositions ₁₈
• orthopaedic ₂₀
• overloading ₂₀
• organically ₂₁
• omnipresent ₁₉
• overhauling ₂₂
• originators ₁₄
• overbearing ₂₁
• obstinately ₁₈
• officiating ₂₃
• ornithology ₁₉
• orthodontic ₁₈
• oviposition ₁₉
• outpatients ₁₆
• orthostatic ₁₆
• outstripped ₁₉
• overcharges ₂₂
• opportunism ₂₂
• optometrist ₁₇
• ostentation ₁₃
• orthopedics ₂₀
• omniscience ₂₂
• oppressions ₁₈
• outcropping ₂₄
• orientalism ₁₆
• orderliness ₁₄
• obviousness ₂₀
• occupancies ₂₅
• ornamentals ₁₇
• overgrazing ₂₉
• officialdom ₂₅
• obsolescent ₁₉
• opportunist ₁₉
• overcharged ₂₃
• osteoblasts ₁₅
• ontogenetic ₁₈
• orthonormal ₁₈
• orientalist ₁₃
• overzealous ₂₆
• observables ₂₂
• operability ₂₀
• opinionated ₁₇
• obsessional ₁₆
• overvoltage ₂₂
• overwrought ₂₃
• overfishing ₂₃
• orbicularis ₁₅
• orthotropic ₁₉
• obscenities ₁₈
• objectified ₃₀
• overstocked ₂₃
• offensively ₂₅
• osteoclasts ₁₅
• overstuffed ₂₃
• orchestrate ₁₆
• occultation ₂₀
• overstepped ₂₂
• occasioning ₂₁
• obsessively ₂₁
• overweening ₂₂
• overrunning ₂₁
• overhearing ₂₀
• overshadows ₂₁
• oesophageal ₁₉
• obscuration ₁₉
• overtopping ₂₄
• outperforms ₂₁
• orthodontia ₁₅
• opprobrious ₂₁
• ordinations ₁₄
• overstating ₁₈
• obscurities ₁₈
• outpourings ₁₉
• opportunely ₂₂
• obliterates ₁₅
• odoriferous ₁₆
• orchardists ₁₇
• ornamenting ₁₉
• overflights ₂₃
• orthopedist ₁₇
• ontogenesis ₁₅
• oncologists ₁₈
• overfeeding ₂₂
• obfuscation ₂₂
• overbalance ₂₃
• objectivism ₃₃
• objectivist ₃₀
• odontogenic ₁₅
• overwritten ₁₉
• oligarchies ₁₉
• overreached ₂₁
• ototoxicity ₂₃
• oscillogram ₂₁
• overexposed ₂₆
• outbuilding ₂₁
• ovariectomy ₂₃
• osteotomies ₁₄
• oncogenesis ₁₈
• osteophytes ₁₈
• osmotically ₂₁
• orthodoxies ₂₁
• outweighing ₂₂
• opalescence ₂₂
• overgrowths ₂₂
• overprinted ₂₀
• overwriting ₂₁
• orchiectomy ₂₃
• overworking ₂₅
• openmouthed ₂₂
• optokinetic ₂₂
• outdoorsman ₁₇
• overdressed ₁₇
• overreacted ₁₉
• ovipositing ₂₁
• occidentals ₂₀
• oligopolies ₁₈
• outcrossing ₁₈
• offhandedly ₂₅
• outfielders ₁₇
• oxidization ₂₉
• overanxious ₂₄
• overmatched ₂₄
• oncological ₂₂
• overwinters ₁₉
• outdistance ₁₇
• originalism ₁₈
• omphalocele ₂₄
• overfilling ₂₃
• officiously ₂₄
• oecumenical ₂₃
• oxyrhynchus ₃₂
• overstaffed ₂₂
• outstations ₁₃
• outmaneuver ₂₁
• oxyhydrogen ₂₈
• outflanking ₂₄
• outspokenly ₂₃

There are 1077 11-letter words starting with the letter o in the well-known word game dictionary, 665 in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and 1031 in the Scrabble UK (International - SOWPODS/CSW) dictionary, and 710 in the Words with Friends (WWF) dictionary.