debunk a theory

Translations
опровергнуть теорию
The scientist aimed to debunk a theory that had been widely accepted.
Ученый стремился опровергнуть теорию, которая была широко принята.
Definitions
To debunk a theory means to expose its flaws, inaccuracies, or falsehoods, thereby demonstrating that it is not valid or credible.
Words
debunk

verb
опровергать
a

article or possessive pronoun
неопределённый артикль
theory

noun
теория