欢喜 (huān xǐ) is a compound word formed from two characters that both mean 'joy' or 'delight': 欢 (huān) conveys warmth, cheerfulness, and welcoming feeling, while 喜 (xǐ) emphasizes happiness, celebration, and auspiciousness. Together, they create a slightly literary, elegant term for deep, heartfelt joy — stronger and more refined than the everyday word 高兴 (gāo xìng). It often appears in classical texts, poetry, Buddhist contexts (e.g., 'giving rise to joy'), and formal or emotional speech.

The word functions flexibly as both a noun ('a feeling of delight') and an adjective ('delighted, overjoyed'). It’s commonly used with verbs like 有 (yǒu), 生 (shēng), or 表达 (biǎo dá), and frequently modified by adverbs like 十分 (shífēn) or 满心 (mǎnxīn). Unlike colloquial expressions, 欢喜 tends to avoid casual contractions and rarely appears in imperative or slang constructions.