洞dòng
cave, hole. 9 strokes, radical 氵, first met in HSK 5.
What 洞 is made of
氵 (shuǐ, water) and 同 (tóng, same).
氵 carries the meaning — water — and 同 carries the sound.
How to write 洞
Strokes 1–3 write 氵, then strokes 4–9 write 同.
Free, with no account: the app draws each stroke, then you write it and it says which stroke went wrong.
Print a 米字格 practice sheet for 洞
Words that use 洞
| 洞 | cave, hole 指山体或物体中天然或人工形成的空穴 探险队深入岩洞探寻矿晶。The expedition team ventured deep into the cave to search for crystals. Lesson 416, 辨析对应 · 经世谋断与春华秋实 · Technological Order & Human Vitality |
| 漏洞 | loophole, gap, flaw 指系统或制度中存在的疏漏之处 他们及时填补了系统安全漏洞。They promptly patched the security loophole in the system. Lesson 454, 整肃通流 · 商海统筹与求真明理 · Commercial Strategy & Rational Inquiry |
Characters that share the sound part 同
Written with the same phonetic, so their readings tend to rhyme with each other.
More characters with the radical 氵
All 75 of them, and what the radical means, on the 氵 radical page.