HSK10+
tiǎo
slender
Phonosemantic compound. 穴 represents the meaning and 兆 represents the sound.
穴 Meaning component
xué
cave
兆 Sound component
zhào
omen
Seal script
Clerical script
Regular script
窕
slender; quiet and modest, charming; quiet and secluded; gentle, graceful, and elegant
窈窕
a seductive woman
quiet and secluded
Academia Sinica
Make Me a Hanzi
Unicode
Baxter-Sagart
Dong Chinese
CC-CEDICT
MTSU Chinese text computing