zài
be at
Composed of 才 and 士, which both represent the sound.
Oracle script
Bronze script
Seal script
Clerical script
Regular script
zài
be at, in, on; consist in, rest; (located) at; (to be) in; to exist; in the middle of doing sth; (indicating an action in progress)
Sound component in 1 character (0 verified)
季旭昇《說文新證》p.908