キョ, コ, さ.る, さ.る, い
gone, past, quit, leave, elapse, eliminate, divorce
JLPT4 G3 S5 F440
The relevant oracle bone form of this character is 囗 circular enclosure + 大 stand outstretched. However, the phonetic evidence suggests that 大 was originally 屰# reverse, suggesting "reverse course and *withdraw* from a particular place" → *leave*; *go*; *pass* (away from); *disappear* → *last* (October etc.) (← past ← pass). Also, *resign* (a post) and *divorce* (← take leave of). Recall that although the modern forms are distinct, the earliest form of 屰 is 大 written in reverse.
[Full Kanji Etymology List]