Main word: Obscene means offensive or indecent.
Synonym: Indecent refers to something improper or morally offensive.
In common: Both describe behavior or content that is socially offensive or inappropriate.
Main word: Obstinate means refusing to change one’s opinion or course of action.
Synonym: Stubborn means being unreasonably determined not to change.
In common: Both describe rigidity and unwillingness to yield.
Main word: Obdurate means stubbornly refusing to change one’s mind.
Synonym: Adamant means unshakably firm in one’s stance or opinion.
In common: Both stress unyielding firmness and resistance to persuasion.
Main word: Overturn means to reverse a decision or cause something to fall over.
Synonym: Countermand means to revoke or reverse an order.
In common: Both deal with canceling or reversing an existing state or command.
Main word: Onslaught means a fierce or destructive attack.
Synonym: Attack means aggressive action against someone or something.
In common: Both signify aggressive assault or offensive action.
Main word: Odd means strange or unusual.
Synonym: Queer also means strange or odd.
In common: Both express peculiarity or strangeness.
Main word: Oasis means a fertile spot in a desert or a place of relief.
Synonym: Haven means a place of safety or refuge.
In common: Both describe a place of rest, safety, or comfort amid difficulty.
Main word: Obstreperous means noisy and difficult to control.
Synonym: Boisterous means loud, energetic, and rowdy.
In common: Both describe noisy and uncontrollable behavior.
Main word: Obedient means complying with orders or requests.
Synonym: Dutiful means showing a sense of duty or obedience.
In common: Both highlight willingness to follow rules or instructions.
Main word: Obeisance means deferential respect or gesture of submission.
Synonym: Homage means special honor or respect shown publicly.
In common: Both express respect and reverence toward someone of higher status.