1.NounThat which is affirmed; a declaration that something is true.
"Her success was an affirmation of all her hard work.; The ceremony included an affirmation of loyalty."
2.NounA solemn pledge (to tell the truth, to bear allegiance, etc.), legally equivalent to an oath, taken by people who are forbidden to take a religious oath (such as Quakers) or otherwise prefer not to do so.
3.NounA form of self-forced meditation or repetition; autosuggestion.
"Daily positive affirmations can improve self-confidence."