What are the antonyms for INVALIDATE?

Synonyms for INVALIDATE

Usage Examples for INVALIDATE

  1. The moral character of motives can neither invalidate nor confirm what has been adduced. - "Witchcraft of New England Explained by Modern Spiritualism" by Allen Putnam
  2. He had with difficulty restrained the noble zeal of his compatriots long enough to convince them that the exemption of one Indian baby would not invalidate this theory. - "Mrs. Skaggs's Husbands and Other Stories" by Bret Harte