Definition of imbo in English:

imbo

noun

Australian
informal
  • A stupid or gullible person.

    ‘they played like a bunch of imbos’
    • ‘How about you getting real, imbo!’
    • ‘That's an imbo who lives off of someone else.’
    • ‘He'd toiled for four years to reach China, only to have some total imbo destroy his dream’
    • ‘The bloke is an imbo!’
    • ‘You can't stop these imbos spreading their poison to a lot of other people.’

Origin

1950s: humorous shortening of imbecile.

Pronunciation

imbo

/ˈɪmbəʊ/