Onerous Definition: The definition of onerous is something hard to do, or troublesome. Synonyms: Burdensome, Troublesome, Backbreaking, Wearing, Oppressive Antonyms: Easy, Fluent, Harmless, Comfortable

Opinion Definition: The definition of an opinion is a belief, impression, judgment or prevailing view held by a person. Synonyms: Thought, Idea, Judgment, Theory, Dogma Antonyms: Silence, Dictation, Non-committal, Execution, Order

Opportunity Definition: The definition of an opportunity is an favorable situation for a positive outcome. Synonyms: Chance, Occasion, Turn, Scope, Window Antonyms: Omission, Lapse, Neglect, Leave undone

Optimistic Definition: The definition of optimistic is a feeling or attitude of being positive or hopeful about the future. Synonyms: Hopeful, Confident, Brave, Bright, Cheerful Antonyms: Pessimist, Dejected, Drooping, Disappointment, Cheerless

Opulent Definition: The definition of opulent is displaying or having a lot of wealth. Synonyms: Affluent, Lavish, Luxurious, Moneyed, Prosperous Antonyms: Destitute, Down and out, Broke, Moneyless, Needy