羨
セン, エン, うらや.む, あまり
envious, be jealous, covet
JLPT0 G7 S13 F5000
Abbreviated form of 膳 (meals; provisions) + the top element as described in 盜 (drool with desire) → (figuratively/actually) drool with desire for food (compare 涎) → *covet*; *yearn for* → *envy*. *Be left over* and *remainder* are borrowed meanings.
[Full Kanji Etymology List]