n.
Pronunciation: ' träth, ' tro ̇ th, ' tr ō th, or with th
Function: noun
Etymology: Middle English trouth, from Old English tr ē owth ― more at TRUTH
Date: 12th century
1 : loyal or pledged faithfulness : FIDELITY <pledged my troth >
2 : one's pledged word <I don't remember the details or, by my troth , even the gist ― Stanley Elkin> also : BETROTHAL