ASVAB (Armed Services Vocational Aptitude Battery)Word Knowledge (WK)Hard
The ancient philosopher's arguments were so <b>insidious</b> that they gradually undermined the established beliefs of his time.
- ASubtle
- BHarmless
- COvert
- DBeneficial
Show answer & explanationAnswer & explanation
Correct answer: A. Subtle
Insidious means proceeding in a gradual, subtle way, but with harmful effects. The key here is 'gradually undermined'. 'Subtle' (so delicate or precise as to be difficult to analyze or describe) captures the gradual and not immediately obvious nature of the arguments' impact, making it the best synonym.
Why the other options are wrong
- B. Harmless means not causing or likely to cause damage, which is the opposite of insidious's harmful effects.
- C. Overt means done or shown openly; plainly apparent, which is the opposite of insidious's subtle nature.
- D. Beneficial means favorable or advantageous, which is the opposite of insidious's harmful effects.
Insidious
Proceeding in a gradual, subtle way, but with harmful effects.
- Implies something harmful that is not immediately apparent.
- Often used for diseases, threats, or ideas.
- Suggests treachery or cunning.
Memory trick: Insidious is 'inside' and slowly 'sidling' in.