Definition of O'Neillite in English:

O'Neillite

noun

  • A supporter or adherent of the Northern Irish Unionist politician Terence O'Neill or his policies.

Origin

1960s; earliest use found in The Guardian. From the name of Terence O'Neill, Northern Irish Unionist politician and prime minister of Northern Ireland + -ite.

Pronunciation

O'Neillite

/ə(ʊ)ˈniːlʌɪt/