kill off

• 动词短语，指杀死一群生物使其灭绝，或比喻彻底消灭、清除某事物。

A phrasal verb used to indicate the act of causing the death of a group of living things, or figuratively, to destroy or eliminate something completely.

不可数 · 及物 · 短语动词，可分

1. Eliminate completelyformal

   To destroy or cause the death of all members of a group, species, or population.

   彻底消灭

   • The disease killed off nearly half the population.
   • The new predator species killed off the native birds.
   • The harsh winter killed off many insects.

   同义词annihilatedecimateeradicateexterminateextinguishwipe out

   反义词preserveprotectrestorerevivesavespawn

2. End or destroy graduallyinformal

   To gradually bring something to an end, such as a tradition, idea, or feeling.

   逐渐消灭

   • The new technology killed off the demand for typewriters.
   • The scandal killed off any chance of his promotion.
   • The constant criticism killed off her enthusiasm for the project.

   同义词extinguishphase outsnuff outstamp out

   反义词maintainnurturepreservesustain

基本动词kill