Iontrálacha san Fhoclóir Nua Béarla-Gaeilge a bhrabhsáil
- obstetrics
- obstinacy
- obstinate
- obstinately
- obstreperous
- obstruct
- obstruction
- obstruction of justice
- obstructionism
- obstructive
- obtain
- obtainable
- obtrusive
- obtrusively
- obtuse
- obviate
- obvious
- obviously
- obviousness
- occasion
- occasional
- occasional table
- occasionally
- occidental
- occipital bone
- occlusion
- occult
- occulted
- occultist
- occupancy
- occupant
- occupation
- occupational
- occupational hazard
- occupational health
- occupational therapist
- occupational therapy
- occupationally
- occupied
- occupier
- occupy
- occupying
- occur
- occurrence
- ocean
- ocean-going
- oceanarium
- oceanfront
- oceanic
- oceanographer