Definition of invalidator in US English:

invalidator

noun

  • See invalidate

    • ‘The popularity of Theodore is due, not to his intellectual discernment (we laugh), but to his steady hatred of almost everything, and his capacity for being used as an invalidator, allowing a monopoly of prestige.’
    • ‘Basing his lecture around the short article by Imaam Ibn Baaz, the speaker outlines The ten main invalidators of Islaam.’
    • ‘This encourages invalidators to look at their own feelings rather than blaming others for things that go wrong.’

Pronunciation

invalidator

/-ˌdātər/