‘外语’ literally means ‘outside language’ — ‘外’ (wài) means ‘outside’ or ‘foreign’, and ‘语’ (yǔ) means ‘language’ or ‘speech’. Together, they refer to any language other than one’s native or primary language. It is a neutral, formal term commonly used in education, government, and media contexts — for example, in phrases like ‘外语课’ (foreign language class) or ‘外语水平’ (foreign language proficiency). Unlike more colloquial terms such as ‘洋文’ (a slangy, sometimes playful or slightly outdated term for foreign writing), ‘外语’ carries no informal or humorous connotation.

The word is typically used in institutional or academic settings: schools offer ‘外语教学’, universities have ‘外语学院’, and official exams assess ‘外语能力’. It does not specify which language — context determines whether it’s English, Japanese, French, etc. While Mandarin speakers in China often use ‘外语’ to mean English by default (due to its dominant role in education), the term itself is language-agnostic and applies equally to any non-native language.