affirm

Universal Words verb (formal) to state firmly or publicly that sth is true or that you support sth strongly: [VN] Both sides affirmed their commitment to the ceasefire. * The decision was affirmed by the Court of Appeal. * [Vthat] I can affirm that no one will lose their job. [also Vspeech] affirmation noun [U,C]: She nodded her head in affirmation.