Trouthe

Part of speech: noun

Definitions

1. The quality of being true and in accordance with fact ; the loyalty one shows to a person or a sworn promise
2. Honest correspondence with what is real ; steadfast allegiance to someone, or a binding vow given in good faith
3. Conformity to what is actually the case ; constancy in loyalty, or a pledge of fidelity made to another person

Etymology: Most of this word's history is about loyalty, not accuracy. Its Old English ancestor, "trēowþ," was built from "trēow," meaning faithful or loyal, plus the abstract-noun ending "-th," the same suffix found in "length" and "health." The sense of conformity to fact came later, during the Middle English period, when speakers began applying the word to what was reliably so as well as to what was reliably kept. The older sense survives in "troth," the same word in a shorter form. You still meet it in "plight one's troth," meaning to make a solemn promise, usually of marriage, and in "betroth." The spelling "trouthe" is a Middle English form, and the modern "truth" developed from that medieval spelling.