サイ, た.つ, さば.く
tailor, judge, decision, cut out (pattern)
JLPT1 G6 S12 F297
?# as described in 栽 (cut; sever) + 衣 clothing → *cut cloth* in making clothes (compare 初) → *decide*; *judge* (← cut through to a decision ← cut). For these latter meanings, compare 決, 判, 折, and 斷.
[Full Kanji Etymology List]