ジョ, ジ, のぞ.く, よ.け
exclude, division (x/3), remove, abolish, cancel, except
JLPT3 G6 S10 F594
As per 余# (disperse surplus earth) + 阜 piled earth (for emphasis/clarification) → disperse surplus earth → *remove* → *divide*; *exclude*; *cancel*; *abolish* → *except*. 除 was devised to replace 余 after 余 came to convey "surplus" rather than the idea of dispersal.
[Full Kanji Etymology List]