plight your troth
plight (one's) troth
To bind oneself to another person in marriage. This archaic phrase, still sometimes used in modern writing for stylistic effect, employs the obsolete words "plight" ("to pledge") and "troth" ("truth"). There are some practical matters that people rarely consider when they decide to plight their troth.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
plight your trothpledge your word in marriage or betrothal.
The verb plight is now virtually obsolete except in this particular phrase, as is the noun troth .
Farlex Partner Idioms Dictionary © Farlex 2017