Positive nouns that start with o
Oasis
Oath
Obedience
Obeisance
Object lesson
Objective
Objet d’art
Obligation
Observance
Occasion
Occupational therapy
Offer
Offering
Old stager
Olive branch
Olympian
Omnipotent
One-liner
Oodles
Oomph
Opening
Openness
Opportunity
Optimism
Optimist
Optimum
Oracy
Orator
Order
Organic
Organization
Orientation
Original
Originality
Ornament
Ornamental
Our father
Our lord
Out-of-this-world
Overture