What is the opposite of invalidating?

Need antonyms for invalidating? Here's a list of opposite words from our thesaurus that you can use instead.

Adjective
(of a person, attitude, or situation) Opposite of having a toxic or damaging influence
“When Clive took on a mentoring role, he became an immensely positive influence on my life.”
Adjective
Opposite of not supporting
Verb
Opposite of present participle for to put an end to, especially formally
Verb
Opposite of present participle for to make or prove (an argument, statement, or theory) unsound or erroneous
Noun
Opposite of abandonment or abolition
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