揃
セン, そろ.える, そろ.う, そろ.い, き.る

be complete, uniform, all present

JLPT0 G13 S0 F2412

As per 前# (cut/shear in small increments) + 手 hand/action indicator → *shear*, then *arrange* objects neatly, in close adherence → a *set/unit*; *all*; *line up*; *make objects uniform*; suffix suggesting *every one of*. 揃, like 剪, was devised to replace 前 after the latter underwent its transformation of meanings.

[Full Kanji Etymology List]