杳 miu⁵ {yǎo}

1. dark and quiet
2. disappear

杳然 miu⁵ jin⁴ {yǎo rán}

1. quiet, silent, and lonely
2. far and indistinct
3. gone without a trace

杳冥 miu⁵ ming⁵ {yǎo míng}

1. dim and dusky
2. far and indistinct

杳杳 miu⁵ miu⁵ {yǎo yǎo}

1. deep and somber
2. see also 窈窈

杳渺 miu⁵ miu⁵ {yǎo miǎo}

dimly discernible

杳茫 miu⁵ mong⁴ {yǎo máng}

distant and out of sight

杳靄〔-霭〕 miu⁵ oi² {yǎo ǎi}

far and deep

杳無音訊〔-无-讯〕 miu⁵ mou⁴ jam¹ seon³ {yǎo wú yīn xùn}

haven't heard anything from them since

杳無人跡〔-无-迹〕 miu⁵ mou⁴ jan⁴ zik¹ {yǎo wú rén jì}

remote and uninhabited; without even human footprints

杳如黃鶴〔--黄鹤〕 miu⁵ jyu⁴ wong⁴ hok⁶ {yǎo rú huáng hè}

1. to be gone forever (idiom)
2. to disappear without a trace

杳無音信〔-无--〕 miu⁵ mou⁴ jam¹ seon³ {yǎo wú yīn xìn}

to have no news whatever

杳無人煙〔-无-烟〕 miu⁵ mou⁴ jan⁴ jin¹ {yǎo wú rén yān}

1. dark and uninhabited (idiom); remote and deserted
2. God-forsaken