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tr.v. in·val·i·dat·ed, in·val·i·dat·ing, in·val·i·dates
To make invalid; nullify.

in·val′i·da′tion n.
in·val′i·da′tor n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.invalidator - an official who can invalidate or nullifyinvalidator - an official who can invalidate or nullify; "my bank check was voided and I wanted to know who the invalidator was"
functionary, official - a worker who holds or is invested with an office
References in periodicals archive ?
87) The initial drafters deliberately proposed removal of the right to freely "practice" religion, and were content to limit the right to the freedom of "worship" and the freedom to "profess" one's religion(88) in order to prevent a free practice clause from being used as a bar to future social legislation or as an invalidator of past legislation.