Definition of idiot born in US English:

idiot born

noun

Regional
archaic, offensive
  • A person mentally disabled from birth.

Origin

Mid 16th century; earliest use found in Christopher Goodman (d. 1603), Church of England clergyman and radical protestant thinker. From idiot [adjective] + born.

Pronunciation

idiot born

/ˌɪdɪət ˈbɔːn/