How to Write 一 (yī/yí/yì) — Meaning “one”

Imagine a single straight line lying flat, like a stick or a line on a page — that line means 'one'. You can also think of it as 'one horizontal stroke equals the number one', which is easy to recall because it looks exactly like the numeral 1 written in many fonts.

Write a single, smooth horizontal stroke from left to right, keeping it perfectly level and not tilting up or down. A common mistake is making the stroke too short or too long — aim for a balanced width, roughly the same length as other characters you write beside it.

一 is just one horizontal stroke, while 丁 has a vertical hook dropping down from the end of the horizontal line, and 丂 has a vertical stroke with a curved tail. Visually, 一 is simpler; in meaning, 丁 means 'nail' or 'males' and 丂 is an ancient character rarely used today, while 一 always means 'one'.

一 is used everywhere as the number 1, in phrases like 一个 (one item) and 一起 (together). Culturally, the character 一 is considered the start of all things in Chinese philosophy, and its pronunciation changes to yí or yì depending on the following tone — a unique rule learners should remember.

Common words containing 一 include: 一个 (yí gè) — one (item/person); 一起 (yì qǐ) — together; 一下 (yī xià) — a bit; briefly.