側
ソク, かわ, がわ, そば
side, lean, oppose, regret
JLPT3 G4 S11 F216
As per 則# (beside): → *side* → *move (toward)*; *lean*; *one of two facing sides* → *raise* (← raise the head so as to face another person directly). Here, 人 has no semantic function, being used simply to create a derivative character conveying meanings that dropped from the original one.
[Full Kanji Etymology List]