vt.保证,约定(plight的过去式与过去分词形式);
例句:
She plighted herself to a young artist.
她已和一位年轻艺术家订婚.
He plighted his word to attempt it.
他发誓一试.
They plighted their troth for the rest of their days.
他们俩盟誓结为终身伴侣.