noun
rat race
Refers to the competitive, exhausting struggle for success in work or life, often implying a never-ending cycle. Used as a loanword from English.
彼はラットレースから抜け出して田舎で暮らし始めた。
He got out of the rat race and started living in the countryside.
都会のラットレースに疲れてしまった。
I got tired of the urban rat race.