pestilential

• 形容某事物极其有害、具有破坏性，或令人极其厌烦；常与瘟疫、疾病或道德败坏相关。

An adjective describing something that is extremely harmful, destructive, or annoying, often associated with disease or plague.

1. Causing or spreading diseaseC2formalmedical

   Likely to spread and cause an epidemic disease; relating to a pestilence.

   传染性的

   • The pestilential air of the swamp caused many to fall ill.
   • Pestilential diseases like the plague ravaged medieval Europe.
   • The city was abandoned due to pestilential conditions.

   同义词contagiousepidemicinfectiouspestiferousvirulent

   反义词salubrioussanitarywholesome

2. C2formal

   Having a harmful or destructive effect on society or individuals.

   有害的

   • His pestilential influence corrupted the entire organization.
   • The pestilential spread of misinformation caused widespread panic.
   • Pestilential ideas can undermine social stability.

   同义词banefuldamagingdeleteriousdestructiveharmfulinjuriousnoxiousperniciousruinous

   反义词beneficialbenignsalutarywholesome

3. Annoying or troublesomeC2informal

   Causing irritation or trouble; bothersome.

   讨厌的

   • The pestilential noise from the construction site kept me awake.
   • He is a pestilential fellow who never stops complaining.
   • These pestilential mosquitoes are ruining our picnic.

   同义词aggravatingannoyingbothersomecursedirritatingpeskytroublesomevexatious

   反义词agreeabledelightfulpleasantwelcome