affirmation -

af.fir.ma.tion \.af-*r-'ma--sh*n\ n 1: the act of affirming; also : something affirmed : ASSERTION 2: a solemn declaration made under the penalties of perjury by a person who conscientiously declines taking an oath

affirm -

af.firm \*-'f*rm\ \*-'f*r-m*-b*l\ \*-'f*r-m*n(t)s\ vb [ME affermen, fr. MF afermer, fr. L affirmare, fr. ad-]+ firmare to make firm, fr. firmus firm - more at FIRM 1a: VALIDATE, CONFIRM 1b: to assert as valid or confirmed 1: to testify or declare by affirmation 2: to uphold a judgment or decree of a lower court - af.firm.able aj

confirm -

con.firm \k*n-'f*rm\ \-.f*r-m*-'bil-*t-e-\ \-'f*r-m*-b*l\ vt [ME confirmen, fr. OF confirmer, fr. L confirmare, fr. com]- + firmare to make firm, fr. firmus firm 1: to make firm or firmer : STRENGTHEN 2: to give approval to : RATIFY 3: to administer the rite of confirmation to 4: to give new assurance of the validity of 5: ASSERT, MAINTAINAUTHENTICATE, VALIDATE mean to attest to the truth or validity of something. CONFIRM implies the removing of doubts by an authoritative statement or indisputable fact; CORROBORATE suggests the strengthening of what is already partly established; SUBSTANTIATE implies the offering of evidence that sustains the contention; VERIFY implies the establishing of correspondence of actual facts or details with those proposed of guessed at; AUTHENTICATE implies establishing genuineness by adducing legal or official documents or expert opinion; VALIDATE implies establishing validity by authoritative affirmation or by factual proof - con.firm.abil.i.ty n SYN syn CONFIRM, CORROBORATE, SUBSTANTIATE, VERIFY,