All words

pernicious

Meaning

Having a harmful effect, especially in a gradual or subtle manner.

Examples by difficulty

Basic: Simple, everyday vocabulary — the easiest to read.

The doctor warned that smoking has a pernicious effect on the lungs. His words sounded serious, and my mother’s face grew pale. She knew he meant it was not just unhealthy but could actually destroy her lungs and even be deadly over time.

The constant lies were a pernicious poison, slowly killing their trust. Every falsehood was a sharp stab, making the relationship weaker. It was truly destructive and hurt them deeply, leaving them broken.

The cancer spread through his body with pernicious speed, consuming healthy tissue and leaving only weakness behind. Each test revealed more damage, more loss. His family watched, helpless, as the disease carved away everything that once made him strong.

When Tim tried to microwave his leftover fish with the metal fork still inside, the results were truly pernicious—sparks flew, alarms blared, and his cat became a furry missile. Who knew reheating lunch could be so highly injurious or destructive, not just for dinner, but for living room furniture?

My pet hamster, Reginald, has a truly pernicious habit of nibbling on electrical cords. Last night, his tiny teeth unleashed a spark so powerful, it blew out the whole block's Christmas lights. Now, our house is darker than a black hole, and Reginald just looks pleased with himself.

Normal: Standard, everyday language.

The pernicious effects of smoking can lead to serious health problems such as lung cancer and heart disease. It is important to quit smoking in order to avoid these deadly consequences.

The smog settled over the city like a pernicious blanket, suffocating its inhabitants and casting an ominous pall over the cityscape. The air was heavy with pollutants, bringing with it a persistent cough and wheeze among the populace. With each passing day, the pernicious haze seemed to tighten its grip, insidiously eroding the health of all who breathed it.

The pernicious fog crept through the abandoned town, suffocating all signs of life in its path. As it enveloped the crumbling buildings, a sense of dread settled over the desolate streets. The once vibrant community now lay silent and still, consumed by the malevolent presence of the thick mist. Those unfortunate enough to be caught in its grasp found themselves gasping for breath, their lungs burning with each labored inhale. The pernicious fog showed no mercy, its deadly grip tightening with each passing moment. And as the last desperate cries faded into the eerie silence, the town was left to rot in the suffocating embrace of the malevolent mist.

In the desolate wasteland, shadows danced ominously, casting pernicious whispers upon the shivering souls. The once-verdant fields now lay withered, their life sapped by the insidious blight that spread like a creeping poison. Amidst the ruins, a lone figure stumbled, their cries swallowed by the suffocating darkness. The pernicious tendrils of decay had claimed their victim, leaving behind only a haunting echo of the life once extinguished.

In the land of Eldoria, a pernicious darkness threatened to consume the kingdom. The evil sorcerer, Malakar, had unleashed a curse that spread like a plague, turning everything it touched into shadows. The villagers lived in fear, their crops withering and their loved ones falling ill. But hope still lingered in the hearts of the brave warriors who vowed to defeat the malevolent force. Armed with courage and determination, they set out on a perilous journey to confront Malakar and banish the darkness from their land once and for all. The fate of Eldoria hung in the balance.

Advanced: Richer vocabulary that stretches an upper-level reader.

Rumors can have a pernicious effect on a community. When lies spread quickly, they destroy trust and friendships. Neighbors turn against each other and people no longer feel safe. What started as simple gossip becomes highly injurious and even deadly to the sense of belonging that once held everyone together.

The slow spread of the disease was incredibly pernicious, a silent enemy consuming everything it touched. Every day brought news of more suffering, more loss, confirming the truly deadly nature of the affliction. Hope dwindled as the destruction continued.

The toxic mold spread silently through the walls, its pernicious growth eating away at the home's foundation. Sarah realized too late how quickly such a small patch could compromise everything, threatening not just the structure but the health of her entire family.

While Todd believed his roommate’s pet iguana was harmless, he soon discovered its pernicious habits: shredding his tax returns and devouring socks in broad daylight. Who knew one scaly creature could be so highly injurious or destructive to both finances and footwear?

The new office intern’s coffee-making skills were so pernicious, they bordered on lethal. Each brewed cup threatened a swift, caffeine-induced demise, a truly destructive force that left seasoned employees gasping for air and questioning their life choices.

Challenging: Rare, high-register vocabulary for serious word lovers.

The pernicious effects of the toxin became obvious within hours, as healthy volunteers developed symptoms that compromised major organs. The community, once reassured by authorities, grew apprehensive as they realized how something so imperceptible could rapidly inflict such highly injurious and destructive harm on so many.

The insidious whispers grew, each insinuation a pernicious blow to his reputation. Soon, trust eroded, friendships fractured, and his livelihood was irrevocably destroyed. The damage was deep and deadly.

The cancer spread with pernicious speed through her body, consuming healthy tissue and leaving only a hollowed shell of what she once was. Each test revealed more devastation, each treatment a futile attempt to halt the relentless destruction consuming her from within.

Gavin’s attempt at “gourmet” chili resulted in a pernicious concoction so highly injurious that even the neighbor’s cat, typically indomitable in its scavenging, fled in abject terror. The chili was so deadly, local emergency rooms contemplated stockpiling antacids in anticipation of future culinary catastrophes.

My neighbor's prize-winning petunias, usually resplendent, have succumbed to a pernicious blight, their once-vibrant petals now a desiccated husk. I suspect my cat's clandestine nocturnal foraging, a truly nefarious endeavor, might be the perpetrator of this horticultural homicide.

Difficulty

Advanced — Less frequent words that stretch an upper-level vocabulary.

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