notionality

nubility

nucleophilicity

nudity

nullity

nuptiality

obesity

objectivity

obliquity

obscenity

obscurity

observability

obtainability

obtusity

oddity

oncogenicity

opacity

openability

operability

opportunity

opposability

optimality

optionality

oracularity

orality

organicity

originality

orotundity

orthogonality

osmolality

osmolarity

otiosity

ototoxicity

outcity

outpity

outpitying

ovality

overactivity

overcapacity

overfamiliarity

overgenerosity

overingenuity

overintensity

overmaturity

oversensitivity

packability

palatability

palpability

pansexuality

paradoxicality