noun
feigning death; playing dead; thanatosis
Biological term for an animal's defensive behavior of pretending to be dead. Also used metaphorically for humans pretending to be dead or unresponsive.
ある種の昆虫は、捕食者に襲われると擬死をする。
Some insects feign death when attacked by a predator.
彼は上司に叱られて、まるで擬死のように黙り込んだ。
Scolded by his boss, he fell silent as if playing dead.