正 is built from the 一 and 止 components.
It belongs to a phonetic family with 政, 定, 証, and 従 — they share the 正 component and the reading ショウ.
A common word using 正 is 正月 (しょうがつ), meaning “New Year, New Year's Day”.
Kanji that look similar include 丘, 写, 号, and 両.