noun
troth
trohth
noun
1
A solemn pledge or promise, especially one of loyalty or fidelity.
"The knight pledged his troth to serve the crown faithfully."
"They plighted their troth on the steps of the old chapel."
2
A promise to marry someone; a betrothal.
"Her father had already accepted the troth on her behalf."
How to Use Troth
Learner’s notesIn plain EnglishA formal promise or pledge of loyalty, most often used about marriage vows.
Common mistake
Almost always seen today in the fixed phrase "plight one's troth" — it rarely stands alone in modern speech.
Common pairings
plight one's troth
pledge troth
Word Forms
trothed past tense, troths plural, Troths plural, troths singular
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The knight pledged his _____ to serve the crown faithfully.
Etymology
From Old English trēowþ, "truth, faith, fidelity," the same root that gives us "truth" — troth is essentially an older, more formal-sounding twin of that word.