Select the correct synonym for the word given below:
INSIDIOUS
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → Treacherous
- Insidious (Latin "insidiae", ambush) means causing harm slowly and secretly, so that the danger is not noticed until it is too late.
Example: High blood pressure is an insidious disease. - Treacherous means deceptive and dangerous; not to be trusted. Both words describe hidden, deceitful harm, so treacherous is the synonym among the options.
Example: The climbers crossed the treacherous ice slowly.
Why the Other Options are Incorrect?
Option 2: Sincere — Incorrect. Sincere means honest, meaning what one says; it is nearly the opposite of insidious.
Example: Please accept my sincere apologies.
Option 3: Intelligent — Incorrect. Intelligent means quick to learn and understand; it says nothing about hidden harm.
Example: She is an intelligent student.
Option 4: Smart — Incorrect. Smart means clever, or neat and stylish in appearance.
Example: He looked smart in his new suit.
| Synonyms (Insidious) | Antonyms (Insidious) |
|---|---|
| treacherous | sincere |
| stealthy | open |
| sly | straightforward |
| deceptive | harmless |
The following words have also been asked in other CUET (UG) English papers:
| Word | 2026 | 2025 | 2024 | 2023 | 2022 |
|---|---|---|---|---|---|
| treacherous | 26-05 S1 31-05 S2 | 03-06 S1 | – | – | – |