Sinonimo di cross one's heart and hope to die

undertake swear vow promise guarantee pledge affirm assert assure attest covenant declare proclaim pronounce state aver contract engage dare say give an undertaking give one's word bind oneself commit oneself give an assurance swear an oath take an oath cross heart vouch warrant avow asseverate testify plight stipulate claim profess give your word commit agree ensure secure depose swear on the Bible make a deposition swear up and down certify maintain guaranty endorse confirm underwrite vouchsafe soak avouch insure bind solemnly promise swear under oath sign for stand behind state under oath answer for give your oath say so give your word of honour put oneself down for bargain submit witness reassure represent espouse assent wager obligate accede subscribe concur state on oath cinch ice stake plight oneself give assurances pledge oneself give an undertaking to promise under oath live up to swear on bible give a pledge swear blind give witness swear to God make an affidavit swear by enter into an agreement swear to the fact get behind uphold allege contend insist support back defend purport make a commitment protest undertake solemnly give word of honor delegate sponsor argue back up vouch for stand by bear out bear witness give grounds for corroborate verify validate authenticate show testify to swear to announce lay down tell give your assurance insist on evince substantiate ratify give testimony vindicate document notify ascertain provide establish prove demonstrate effect okay give proof of bear witness to provide evidence of rubber-stamp arrange set out nail down clinch sew up make safe lock up seal lock on set the seal on

cross out crossover cross over crossover dribble crossover dribbles crossovers cross oneself cross of Lorraine cross off crossnesses crossness crossmembers