蹑 ⇒
蹑手蹑脚 nièshǒunièjiǎo, [躡手躡腳], to walk quietly on tiptoe (idiom)
蹑 niè, [躡], to walk on tiptoe/to walk quietly/to tread (on)/to follow
悄 ⇒
悄悄 qiāoqiāo, quietly/secretly/stealthily/quiet/worried/Taiwan pr. [qiǎo qiǎo]
悄悄话 qiāoqiaohuà, [悄悄話], whisperings/private words/confidences/sweet nothings
悄悄的 悄然 qiǎorán, quietly/sorrowfully
悄无声息 qiǎowúshēngxī, [悄無聲息], quietly/noiselessly
静悄悄 jìngqiāoqiāo, [靜悄悄], extremely quiet
悄 qiāo/qiǎo, see 悄悄[qiāo qiāo], quiet/sad
悄悄地 悄声 qiǎoshēng, [悄聲], quietly/in a low voice
悄然无声 qiǎoránwúshēng, [悄然無聲], absolutely quiet