- oad ... obdureness
- obeah ... objected
- objectify ... obliquation
- oblique ... obscurantism
- obscurantist ... obsignatory
- obsolesce ... obtension
- obtest ... occasion
- occasionable ... ocean
- oceanic ... octandrous
- octane ... octospermous
- octostichous ... odmyl
- odometer ... oedematous
- oeiliad ... offerture
- offhand ... ogler
- ogling ... oleaginousness
- oleamen ... oligoclase
- oligomerous ... omination
- ominous ... omnivorous
- omohyoid ... onerate
- onerated ... onwards
- ony ... ootooid
- ootype ... operation
- operative ... ophthalmic
- ophthalmite ... opisthobranchiate
- opisthocoelian ... oppositisepalous
- oppositive ... opulency
- opulent ... orbed
- orbic ... orchises
- orchitis ... oreide
- oreodon ... organophyly
- organoplastic ... originary
- originate ... ornithopoda
- ornithorhynchus ... orthis
- orthite ... orthopny
- orthopoda ... oscillation
- oscillative ... ospray
- osprey ... osteoclast
- osteocolla ... ostracean
- ostracion ... otolith
- otolithic ... oust
- ousted ... outcrier
- outcrop ... outgo
- outgoer ... outlook
- outloose ... outrede
- outreign ... outsport
- outspread ... outwent
- outwhore ... overawe
- overawed ... overconfidence
- overconfident ... overfeeding
- overfierce ... overgrew
- overgross ... overlading
- overlaid ... overmagnify
- overmalapert ... overplease
- overplus ... overrigged
- overrighteous ... overslaugh
- oversleep ... oversure
- oversway ... overview
- overvote ... ovipara
- oviparity ... own
- owned ... oxidability
- oxidable ... oxygenized
- oxygenizement ... ozonizer
- ozonizing ... ozonous
Dictionary
English - Sinhala