troth
\ trawth, trohth \,
noun;
1.one's word or promise, especially in engaging oneself to marry.
2.faithfulness, fidelity, or loyalty: by my troth .
3.truth or verity: in troth .
Quotes:
Now, in troth , 'tis a great pity, quoth mine Irish host, that all this good courtship should be lost; for the young gentlewoman has been after going out of hearing of it all along.
-- Laurence Sterne, "The Life and Opinions of Tristram Shandy, Gentleman," 1767
By my troth , my lord, I cannot tell what to think of it…
-- William Shakespeare, "Much Ado About Nothing," 1600
Origin:
Troth entered English in the 1100s from the Middle English trowthe, trouthe meaning "truth." It ultimately comes from the Old English trēowth .
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