Pernicious
English Definition
Having a harmful effect, especially in a gradual or subtle way.
हिंदी अर्थ: हानिकारक, विनाशकारी, घातक (विशेषकर धीरे-धीरे या गुप्त रूप से)
💡 Memory Trick: Imagine a tiny, seemingly harmless crack in the foundation of your house. You ignore it. Over time, it grows, letting in water, weakening the structure, and slowly making your entire house 'PERISH US!' (Pernicious sounds like 'PERISH US!'). It's not an immediate collapse, but a subtle, insidious, and ultimately destructive influence. This little crack is *pernicious*.
📝 Practical Context & Exam Sentence
"The doctor warned that prolonged exposure to the polluted air could have pernicious effects on lung health, even if symptoms weren't immediately apparent."