A great way to remember a character is by searching for patterns across all the words that contain it. Can you find similarities?
|究竟||4||jiū jìng||exactly, actually (emphasis in question for exact answer)|
|讲究||5||jiǎng jiu||exquisite; be particular about|
|终究||6||zhōng jiū||all in all|
|追究||6||zhuī jiū||look into, find out|
|钻研||6||zuān yán||study intensively|