忠贞不贰 zhōngzhēnbù'èr unswerving in loyalty Origin Definitions Defs Strokes Stroke Words Sentences Sents 忠贞 忠貞 zhōngzhēn loyal and steadfast loyal, dependable, and unwavering, especially toward one's country, cause, or partner不贰 不貳 bù'èr undivided loyal and single-minded; not having a second heart; showing unwavering devotion to a ruler or cause