repudiator Definition

repudiate
verb repudiated, repudiating

1. To deny or reject something as unfounded.

Example: repudiate the suggestion
2. To refuse to recognize or have anything to do with (a person); to disown.

Thesaurus: disavow, divorce, cast off, disown, forsake, reject, renounce, abandon; Antonym: own.
3. To refuse or cease to acknowledge (a debt, obligation, authority, etc).

Thesaurus: disclaim, rescind, disavow, revoke, cast off, deny, reject, renounce, abandon, abjure.

Derivative: repudiable
adj

Derivative: repudiation
noun

The refusal to acknowledge a debt, obligation, authority, etc
Thesaurus: refusal, denial, disclaimer, renunciation, rejection, disavowal, recantation, renouncement, retraction, abjuration; Antonym: acceptance.

Derivative: repudiative
adj

Derivative: repudiator
noun

Etymology: 16c: from Latin repudiare, repudiatum to put away, from repudium divorce.

Info:

See Usage Note at refute.