The lower leg and foot, from knee to toes. The foot itself; also "enough, sufficient, fully" (as in 足够). A knee (口) on top of a foot (止) forms the whole leg.
Soccer is played with the feet, so Chinese uses 踢 (kick), not 打 (hit).
In everyday speech, the body part 'foot' is 脚 (jiǎo). 足 is mostly used in compounds or formal writing.
足球 is a fixed compound meaning 'foot ball', while 脚 is the everyday word for the body part.
足 and 脚 both relate to the foot, but they live in different layers of the language. 足 is the older, more formal word and appears in established compounds like 足球 (soccer), 不足 (insufficient), and 满足 (satisfied). 脚 is the modern everyday word for the physical foot, so you say 我的脚很疼 (my foot hurts), not 我的足很疼. Think of 足 as the 'foot' inside words, and 脚 as the 'foot' on your body.
| Dimension | Natural | Avoid |
|---|---|---|
| Body part in speech | 我的脚很疼 | 我的足很疼 |
| Soccer | 足球 | 脚球 |
| Formal/compound use | 不足、满足 | 不脚、满脚 |
The meaning shifted from 'foot' to 'sufficient' because a foot was a basic unit of completeness.
In classical Chinese, 足 originally meant 'foot'. Because a person stands on two feet and a foot was a basic measure, the word extended to mean 'sufficient' or 'enough'. That is why 不足 means 'not enough' and 满足 means 'satisfied' (literally 'full to the foot'). When you see 足 in a compound, check whether the meaning is about feet (足球) or about sufficiency (不足, 满足).
| Dimension | Natural | Avoid |
|---|---|---|
| Foot meaning | 足球、足下 | 足 enough in body context |
| Enough meaning | 不足、满足 | 脚 for 'not enough' |
| Everyday body part | 脚 | 足 |
In this dialogue, two people chat while waiting outside a cinema. You'll hear common phrases for talking about hobbies, sports, and movie preferences.
Ａ：你喜欢踢 足球 和打篮球吗？
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