Latest Top Free 60+ Synonyms of O MCQs for 2025 – English
1. Choose the correct synonym of the word “Obdurate”
Correct Answer: C. stubborn
Explanation: Obdurate means refusing to change one’s opinion or course of action; stubborn.
2. Among the synonyms of O, the synonym of “Oblique” is:
Correct Answer: D. indirect or evasive
Explanation: Oblique means not straightforward or explicit; indirect or evasive.
3. Choose the correct synonym of the word “Oblivious”
Correct Answer: A. forgetful
Explanation: Oblivious means unaware or lacking memory of something; forgetful.
4. Choose the correct synonym of the word “Obscure”
Correct Answer: A. doubtful
Explanation: Obscure means not clearly seen or understood; being doubtful in clarity.
5. Among the synonyms of O, the synonym of “Observations” is:
Correct Answer: D. observant
Explanation: Observations relate to the act of noticing; being observant means paying close attention.
6. Choose the correct synonym of the word “Obviate”
Correct Answer: B. make unnecessary
Explanation: To Obviate is to remove a need or difficulty; to make unnecessary.
7. Choose the correct synonym of the word “Occlude”
Correct Answer: D. block
Explanation: To Occlude is to close up or obstruct an opening; to block passage.
8. Choose the correct synonym of the word “Odious”
Correct Answer: A. hateful
Explanation: Odious means extremely unpleasant or repulsive; inspiring intense dislike or hateful.
9. Among the synonyms of O, the synonym of “Offended” is:
Correct Answer: B. made angry
Explanation: Being Offended is to feel hurt or upset; having been made angry by an insult.
10. Choose the correct synonym of the word “Ombudsman”
Correct Answer: D. complaint receiver
Explanation: An Ombudsman is an official appointed to investigate public complaints; a complaint receiver.
11. Choose the correct synonym of the word “Omnipresent”
Correct Answer: B. present everywhere
Explanation: Omnipresent means widespread and universal; present everywhere at the same time.
12. Among the synonyms of O, the synonym of “Omnivorous” is:
Correct Answer: D. devouring indiscriminately
Explanation: Omnivorous refers to eating both plants and animals; devouring indiscriminately without limit.
13. Choose the correct synonym of the word “Onerous”
Correct Answer: A. oppressive
Explanation: Onerous means involving great effort or burden; harsh and oppressive.
14. Choose the correct synonym of the word “Op Art”
Correct Answer: B. creates optical illusions
Explanation: Op Art is a style of visual art that intentionally creates optical illusions.
15. Among the synonyms of O, the synonym of “Opportune” is:
Correct Answer: C. timely
Explanation: Opportune means occurring at a favorable moment; being timely.
16. Choose the correct synonym of the word “Opulence”
Correct Answer: B. wealth
Explanation: Opulence refers to great material richness and luxury; extreme wealth.
17. Choose the correct synonym of the word “Oracle”
Correct Answer: B. wise person
Explanation: An Oracle is a source of wisdom or divine revelation; a very wise person.
18. Choose the correct synonym of the word “Oral”
Correct Answer: B. spoken
Explanation: Oral relates to communication by mouth; being spoken rather than written.
19. Among the synonyms of O, the synonym of “Orthodox” is:
Correct Answer: D. ancient minded
Explanation: Orthodox means adhering to traditional and established beliefs; ancient minded.
20. Choose the correct synonym of the word “Osmosis”
Correct Answer: C. diffusion of fluids
Explanation: Osmosis is the process of movement across a membrane; the diffusion of fluids.
In our Synonyms section, we have organized the most important synonyms in alphabetical order. This post focuses on the synonyms of O. It is designed to help users learn and practice these synonyms, many of which have appeared in previous exam papers. These words may also be asked in upcoming competitive exams such as CSS, PMS, CCE, JEST, PST, HST, SST, ASI, Inspector, Assistant Director, and others.
A strong grasp of synonyms is essential for English preparation—especially in exams where vocabulary is assessed. Synonyms help convey the correct meaning, emotion, action, or description, and they reflect the depth of a candidate’s vocabulary. This is particularly important for crafting impressive and precise writing, which is a key factor in competitive exams.