perniciously (Meaning)

Wordnet

perniciously (r)

in a harmfully insidious manner

in a noxiously baneful way

The pernicious rumor spread like wildfire, destroying reputations and causing widespread distress.
The weather was perniciously cold, biting at exposed skin and freezing the ground beneath.
His mind was perniciously infected by the propaganda, making him susceptible to dangerous ideologies.
The disease was perniciously contagious, claiming numerous lives in a matter of days.
The habit of procrastination perniciously eroded her potential and hindered her success.
The government's policies were perniciously discriminatory, creating an atmosphere of fear and inequality.
The polluted river perniciously poisoned the ecosystem, killing fish and harming wildlife.
The misinformation campaign perniciously undermined trust in institutions and sowed division in society.
The virus perniciously mutated, becoming more resistant to treatment and increasing its virulence.
The pernicious influence of social media perniciously distorted our perception of reality and promoted unhealthy comparisons.

in a harmfully insidious manner, in a noxiously baneful way

dangerous, adverse, damaging, detrimental,harmful, nocuous, noxious, deleterious, infectious, destructive

inoffensive,benign, good, innocuous, harmless, favorable, good, beneficial, innocent, favorable

The pernicious rumor spread like wildfire, destroying reputations and causing widespread distress.

The weather was perniciously cold, biting at exposed skin and freezing the ground beneath.

His mind was perniciously infected by the propaganda, making him susceptible to dangerous ideologies.

The disease was perniciously contagious, claiming numerous lives in a matter of days.