Vocabulary—Antonyms MCQ: Choose the best opposite of ‘‘ZENITH’’ by contrasting the highest point, culmination, or peak with the lowest point or nadir.

Given data

• Zenith: highest point; peak; culmination.
• Choices: Acme, Top, Nadir, Pinnacle

Concept/Approach
Oppose top vs. bottom: the antonym is the lowest point.

Option-by-option analysis
Acme/Top/Pinnacle: all synonyms of zenith. ❌Nadir: lowest point—true antonym. ✅

Example
At the zenith of his career he won every award; a year later he was at his nadir.

Final Answer
Nadir