yǎo yǎo
deep and somber
see also 窈窈[yao3 yao3]
yǎo rán
quiet, silent, and lonely
far and indistinct
gone without a trace
yǎo míng
dim and dusky
far and indistinct
yǎo wú rén yān
dark and uninhabited (idiom); remote and deserted
God-forsaken
yǎo rú huáng hè
to be gone forever (idiom)
to disappear without a trace
yú chén yàn yǎo
lit. the fish sinks, the goose vanishes into the distance (idiom); a letter does not arrive
lost in transmission
yàn yǎo yú chén
without news from sb (idiom)
yǎo miǎo
variant of 杳渺[yao3 miao3]
yǎo wú xiāo xī
see 杳無音信|杳无音信[yao3 wu2 yin1 xin4]