踏み込む
ふみこむ · fumikomu · JLPT N1 · noun
district
👣 踏 = step on, 込 = into, 踏み込む = step firmly into a space
踏む (fumu) is to tread or stamp, and 込む (komu) means to go inside or crowd in. Together they describe stepping decisively into someone else's territory.
踏 — foot radical 足 + 沓 (phonetic)
踏 combines the foot radical 足, which signals meaning related to feet or walking, with 沓 as the phonetic component hinting at the sound. The character originally meant to step on or tread, and this core sense of placing the foot down has remained stable through history.