troth UK /tɹəʊθ/US /tɹoʊθ/noun 4verb 1forms 3 noun4 •(no longer used) An oath, pledge, plight, or promise.By my troth I care not, a man can die but once, we owe God a death, [...] — 1596 •(no longer used) A pledge or promise to marry someone. •(no longer used) The state of being thus pledged; betrothal, engagement.I did, therefore, what an honest man should; restored the maiden her troth, and departed the country, in the service of my king. — 1826 •(no longer used) Truth; something true.I can̄ot lerne Banister's confession upon the racke as yet; but he was put to the racke for denying of moost manifest trothes at the first. — 1571 verb1 •(no longer used) To pledge to marry somebody. formstrothed · trothing · troths