皎 gaau² {jiǎo}

1. bright
2. white

皎白 gaau² baak⁶ {jiǎo bái}

bright white

皎皎 gaau² gaau² {jiǎo jiǎo}

clear and bright

皎潔〔-洁〕 gaau² git³ {jiǎo jié}

1. shining clean
2. bright (moonlight)

皎月 gaau² jyut⁶ {jiǎo yuè}

the bright moon

皎厲〔-厉〕 gaau² lai⁶ {jiǎo lì}

proud

皎皎者易污 gaau² gaau² ze² ji⁶ wu¹ {jiǎo jiǎo zhě yì wū}

Virtue is easily sullied. (idiom)