How to Write 染 (rǎn) — Meaning “To dye, to catch (a disease), or to soil.”

Imagine you want to dye your clothes using natural colors from plants (木). You dip the cloth into the dye nine times (九) to make the color deep and lasting. This helps link the character's form to its meaning of dyeing.

Start with the left 木 (horizontal, vertical, left-falling, right-falling). Then write the top right 九 (left-falling, horizontal bending hook), followed by the bottom 木 (horizontal, vertical, left-falling, right-falling). A common mistake is writing the two 木 parts in the wrong order or forgetting that the right side has two stacked components.

While all three have the radical 木 (wood), 杆 (gān) means a pole or stick and is made of 木 + 干, and 杈 (chà) means a branch or fork (木 + 叉). In contrast, 染 (rǎn) contains two 木 parts with a 九 inside and refers to dyeing, catching a disease, or soiling — not a physical object like a pole or branch.

You will often see 染 in words like 染发 (dye hair), 染色 (dyeing or coloring), and 污染 (pollution or contamination). It is also used in medical contexts, such as 感染 (gǎn rǎn, infection), because it can mean 'to catch a disease.'

Common words containing 染 include: 染发 (rǎn fā) — To dye one's hair.; 染色 (rǎn sè) — To dye, dyeing, or coloring.; 污染 (wū rǎn) — Pollution / Contamination.