繕
ゼン, つくろ.う

darning, repair, mend, trim, tidy up, adjust

JLPT1 G7 S18 F2195

善# good + 糸 thread → *mend/patch* to restore a garment's quality (= make it good) → *fix*; *repair*; *tidy up*.

[Full Kanji Etymology List]