腕前
うでまえ · udemae · JLPT N1 · noun
facility
🦾 腕 (arm) + 前 (in front): skill is the ability your arm brings forward, so udemae = skill
腕 means arm or wrist, and in Japanese it also means skill, since a craftsperson's hands show ability. 前 here carries the sense of a measure or degree, so 腕前 names how much skill someone has.
前 — top 丷 + 一 + 月 (moon) + 刂 (knife)
Originally written 歬, depicting a foot 止 above a boat 舟, meaning to advance or go forward. Over time the form evolved and the knife radical 刂 was added, while 止 and 舟 fused into the modern shape. The core meaning 'front, before, ahead' has stayed consistent.