愛
アイ, いと.しい, かな.しい, め.でる, お.しむ, まな, あ, あし, え, かな, なる, めぐ, めぐみ, よし, ちか

love, affection, favourite

JLPT3 G4 S13 F640

The relevant seal inscription form combines a variant form of 既# (engorgement) + 心 heart/emotions → be emotionally hindered, in the sense of feeling overladen/dragged down → *love*.

[Full Kanji Etymology List]