Synonyms of affirmation in English:

affirmation


See US English definition of affirmation

See UK English definition of affirmation

See Spanish definition of afirmación

noun

1‘an affirmation of faith’

SYNONYMS
assertion, declaration, statement, proclamation, pronouncement, attestation, assurance
oath, vow, swearing, avowal, guarantee, promise, certification, pledge
deposition
rare asseveration, averment
ANTONYMS

denial, refutation

2‘the poem ends with an affirmation of pastoral values’

SYNONYMS
confirmation, ratification, endorsement, defence