附

A phono-semantic compound:

阜 gives the idea of proximity or connection;

付 lends the sound and supports the meaning of “handing over/attaching.”

According to the Shuowen Jiezi (説文解字 shuōwén jiězì) the original meaning was “small earthen mound.”

Over time, this sense was lost, and the meaning shifted to “attach, join, rely on.”