Definition of O'Neillism in English:

O'Neillism

noun

  • The political and economic policies of the Northern Irish Unionist politician Terence O'Neill.

Origin

1970s. From the name of Terence O'Neill + -ism.

Pronunciation

O'Neillism

/ə(ʊ)ˈniːlɪz(ə)m/