What is the meaning of Invalidate?

To make invalid. Especially applied to contract law.

To make or declare (an argument, statement, or theory) unsound or erroneous; disprove.

To render invalid; discredit.

inflection of invalidare:

1. second-person plural present indicative
2. second-person plural imperative

second-person plural present indicative

second-person plural imperative

feminine plural of invalidato

second-person singular voseo imperative of invalidar combined with te

Source: wiktionary.org