贞

三贞九烈

sān zhēn jiǔ liè

(of a widow) faithful to the death to her husband's memory

坚贞

jiān zhēn

firm

坚贞不屈

jiān zhēn bù qū

faithful and unchanging (idiom); steadfast

坚贞不渝

jiān zhēn bù yú

unyielding integrity (idiom); unwavering

女贞

nǚ zhēn

privet (genus Ligustrum)

安贞

ān zhēn

Antei (Japanese reign name, 1227-1229)

忠贞

zhōng zhēn

loyal and dependable

忠贞不渝

zhōng zhēn bù yú

unswerving in one's loyalty (idiom); faithful and constant

永贞内禅

yǒng zhēn nèi shàn

Yongzhen abdication of 805

永贞革新

yǒng zhēn gé xīn

Yongzhen Reform, Tang dynasty failed reform movement of 805 led by Wang Shuwen 王叔文[Wang2 Shu1 wen2]

白素贞

bái sù zhēn

(name of a person) Bai Suzhen, from Madame White Snake

童贞

tóng zhēn

virginity