dog–eat–dog

dog–eat–dog /ˌdɑːgˌiːtˈdɑːg/ adjective
dog–eat–dog
/ˌdɑːgˌiːtˈdɑːg/
adjective
Britannica Dictionary definition of DOG–EAT–DOG
— used to describe a situation in which people compete with each other for success in a cruel and selfish way