HSK4
jiū
examine, scrutinize
Phonosemantic compound. 穴 represents the meaning and 九 represents the sound.
穴 Meaning component
xué
cave
九 Sound component
jiǔ
nine
Bronze script
Seal script
Clerical script
Regular script
究
examine, investigate; after all; to investigate; to study carefully; Taiwan pr. [jiù]
研究
research
究竟
after all
研究所
research institute
研究生
graduate student
追究
to investigate
Academia Sinica
Make Me a Hanzi
Unicode
Baxter-Sagart
Dong Chinese
CC-CEDICT
SUBTLEX-CH
MTSU Chinese text computing
漢語多功能字庫