友好 (yǒu hǎo) is an adjective meaning 'friendly' or 'amicable', describing a warm, respectful, and cooperative attitude between people or groups. The first character 友 (yǒu) means 'friend' or 'friendship', while the second character 好 (hǎo) means 'good' — together they literally convey 'friend-good', emphasizing goodwill and positive relational intent. It’s commonly used to describe interpersonal behavior, diplomatic relations, customer service, or social interactions where harmony and mutual respect are valued.

This word carries a formal yet approachable tone — it appears frequently in official statements (e.g., 'friendly cooperation'), workplace communication, and everyday descriptions of someone’s demeanor. Unlike colloquial terms like 亲切 (qīn qiè, 'warm and close') or 和气 (hé qì, 'gentle-tempered'), 友好 emphasizes intentional, outwardly expressed goodwill rather than emotional intimacy or personality traits. It’s often paired with nouns like 关系 (guān xì, 'relationship'), 态度 (tài dù, 'attitude'), or 氛围 (fēn wéi, 'atmosphere').