[verb] [T] - to state (something) as true, or to state your support for (an idea, opinion, etc.)The suspect affirmed (that) he had been at home all evening. [+ (that) clause]"The door was unlocked when I arrived," she affirmed. [+ speech]She affirmed her intention to stand for the presidency.The government affirmed its commitment to equal rights.The delegates affirmed the right to freedom of speech.
AFFIRM
Meaning of AFFIRM in English
Cambridge English vocab. Кембриджский английский словарь. 2012