无可厚非
wú kě hoù fēi · HSK 7
see 未可厚非[wei4 ke3 hou4 fei1]
无 not + 可 able + 厚 heavily + 非 blame = cannot be blamed much, excusable
A four-part verbal chain: 无可 (cannot) plus 厚非 (heavily blame) means the fault is too small to condemn. Same idiom as 未可厚非; use it when something is understandable or pardonable rather than wrong.
无 — top 一 + 林-like middle + fire radical 灬 below
Originally a pictograph of a person dancing while holding ornaments or tassels, meaning 'to dance' — the ancestor of 舞. It was borrowed phonetically to write the negative 'not have / without,' and the dance meaning was reassigned to 舞 with an added foot element. The simplified form 无 comes from an ancient variant.
可 — mouth 口 + breath marker 丁 (modified)
可 originally depicted a mouth (口) with a curved stroke suggesting exhaled breath or speech, conveying approval or assent. From this came the meaning 'to permit' or 'can,' as granting permission was expressed verbally. Today it broadly means 'may,' 'can,' or 'approve.'
厚 — cliff 厂 + 子 over 日 (sun) component
Originally depicted a tall, thick mound or cliff (厂) with layered earth beneath, showing depth and substance. The core meaning 'thick' extended metaphorically to 'generous,' 'deep,' or 'kind-hearted.' Today 厚 commonly means thick (in dimension) or sincere/generous in character.
非 — two opposing wings 羽-like form
Originally a pictograph showing two wings spread in opposite directions, symbolizing things facing away from each other. From this 'opposition' image came the meaning 'not' or 'wrong.' It is also used as a phonetic component in many characters like 排, 悲, and 罪.