brain-dead

adjective
\ ˈbrān-ˌded How to pronounce brain-dead (audio) \

Definition of brain-dead

1 : characterized by brain death
2 : lacking intelligence or vitality brain-dead fools

First Known Use of brain-dead

1972, in the meaning defined at sense 1

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More Definitions for brain-dead

brain-dead

adjective

English Language Learners Definition of brain-dead

medical : showing no sign of activity in the brain : having no brain function
informal : very stupid : not able to function normally