simplified
traditional
language · speech · words · to speak · saying
部首 bùshǒu · 讠yán speech 9 笔画 bǐhuà strokes HSK 2 tone 3 · yǔ
笔顺 bǐshùn · Stroke order

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字源 zìyuán Etymology & Structure
字源洞见 zìyuán dòngjiàn · Etymological Insight

语 yǔ is a phonosemantic compound: the left side is 讠(言 yán in traditional form — the speech radical, a mouth with a horizontal line representing the breath of speech), and the right side is 吾 wú (I, me — which functions as the phonetic component, historically related in sound). The semantic reading is poetic: language as the self (吾) speaking (言) — the act of articulating the inner self to the world.

语 carries two primary senses: as a noun, it means language, speech, or words (汉语 Chinese language, 母语 mother tongue, 语言 language). As a verb (classical usage), 语 means "to speak to, to tell" — a usage still found in literary contexts and set phrases (不言不语 "neither speaking nor saying anything"). In modern Mandarin, the verb function has largely been taken over by shuō.

语 is the standard element for naming languages: virtually every language in the world is named in Chinese as [ethnic/national identifier] + 语. This creates a conceptually unified system: 汉语 (Chinese), 英语 (English), 法语 (French), 德语 (German), 西班牙语 (Spanish), 阿拉伯语 (Arabic), 日语 (Japanese), 韩语 (Korean). The system treats all languages as structurally parallel — each is the speech of a people.

语言 yǔyán Naming Languages — The World's Tongues in Chinese
世界语言 shìjiè yǔyán · Language Names 汉语 Hànyǔ Chinese (language of the Han) · 普通话 Pǔtōnghuà Mandarin (common speech) · 英语 Yīngyǔ English · 法语 Fǎyǔ French · 德语 Déyǔ German · 西班牙语 Xībānyáyǔ Spanish · 葡萄牙语 Pútáoyáyǔ Portuguese · 俄语 Éyǔ Russian · 阿拉伯语 Ālābóyǔ Arabic · 日语 Rìyǔ Japanese · 韩语 Hányǔ Korean · 印地语 Yìndìyǔ Hindi

Note: 汉语 vs. 中文 — both mean "Chinese language." 汉语 is the ethnolinguistic term (language of the Han people); 中文 is more informal and refers to written Chinese or Chinese in general. 粤语 Yuèyǔ = Cantonese (not a 语 of a foreign nation but a variety of Chinese).
语字 yǔ zì Key 语 Compounds
语言 yǔyán language — speech as a system
N 名词 míngcí
语 yǔ (speech; words) + 言 yán (speech; to speak — used as a noun here). Language as a systematic phenomenon — the academic/formal word for language as a system, not a specific language. 语言学 yǔyánxué = linguistics. 语言障碍 = language barrier. 语言天才 = language genius (gifted polyglot). 肢体语言 = body language. 语言和言语的区别 = the distinction between langue and parole (language system vs. speech act) — a distinction Ferdinand de Saussure made famous in Western linguistics, which Chinese linguists discuss using these exact terms.
语言是人类交流思想的最重要工具。
Yǔyán shì rénlèi jiāoliú sīxiǎng de zuì zhòngyào gōngjù.
Language is the most important tool for human communication of thought.
成语 chéngyǔ chengyu — four-character set phrases
N 名词 míngcí
成 chéng (to become; set; established) + 语 yǔ (speech; phrase). Set phrases — the four-character classical idioms that are one of the most distinctive features of Chinese. 成语 are compressed narratives, mostly four characters, encoding a story from history or classical literature. Fluency in 成语 signals education and cultural depth; overuse signals pedantry. There are approximately 5,000 commonly used 成语, with a corpus of over 30,000. 歇后语 xiēhòuyǔ (two-part allegorical sayings) are a related form.
他说话时常引用成语,让人觉得很有学问。
Tā shuōhuà shí cháng yǐnyòng chéngyǔ, ràng rén juéde hěn yǒu xuéwèn.
He often quotes chengyu when speaking — it makes him seem very learned.
母语 mǔyǔ mother tongue; first language
N 名词 míngcí
母 mǔ (mother) + 语 yǔ (language). Mother tongue — the language absorbed in childhood, tied to family and home. 母语为汉语的人 = native Chinese speakers. 母语习得 = first language acquisition. 目标语 mùbiāoyǔ = target language (the language being learned). 外语 wàiyǔ = foreign language. The Chinese language learning community uses 汉语作为外语 (Chinese as a foreign language) and 对外汉语 (Chinese for foreigners) — the field now called 国际中文教育 (International Chinese Education).
他的母语是粤语,但普通话也说得很流利。
Tā de mǔyǔ shì Yuèyǔ, dàn Pǔtōnghuà yě shuō de hěn liúlì.
His mother tongue is Cantonese, but he also speaks Mandarin fluently.
成语 chéngyǔ Idioms & Set Phrases
语重心长 yǔ zhòng xīn cháng words are weighty, feeling is deep — earnest, heartfelt advice Lit: words-weighty-heart-long. Used to describe sincere, deeply felt words from someone who genuinely cares — a mentor's advice, a parent's warning, a teacher's final lesson before a student departs. The heaviness (重) of the words comes from the depth () of the feeling behind them. It is a compliment to both the speaker's sincerity and the quality of their counsel.
不言而喻 bù yán ér yù without words, it is understood — self-evident; goes without saying Lit: not-speak-yet-understand. What goes without saying — a truth so obvious that to speak it would be redundant. Contrasts with the power attributed to 语 elsewhere: here, the deepest understanding transcends the need for words. Used in logical argument: 这一点不言而喻 "this point goes without saying." Related to the Daoist value of silence and the classical idea that the greatest truths are beyond verbal articulation.
相邻词汇 xiānglín cíhuì Adjacent Vocabulary
汉语hànyǔChinese language 语法yǔfǎgrammar 词语cíyǔwords; vocabulary 口语kǒuyǔspoken language 书面语shūmiànyǔwritten language 外语wàiyǔforeign language shuōto speak; to say yánspeech; word (classical)