顔（かお、kao）
- face

The Japanese word 顔 (かお, *kao*) primarily means "face." However, it can also refer to related concepts like expression, appearance, reputation, or the presence of someone. It is a very common and versatile word.

⚫︎顔が広い。 Translation: Has a wide network of acquaintances. ⚫︎彼女の顔はいつも明るい。 Translation: Her face is always cheerful. ⚫︎彼に顔を立てる。 Translation: To save his face (spare his feelings).

⚫︎You use 顔 when referring to someone's physical face. ⚫︎It is used when talking about facial expressions (e.g., happiness, sadness). ⚫︎顔 can also be used in more abstract ways, such as referring to someone's reputation or the impression they give. ⚫︎It's very common in everyday conversation.

⚫︎The standard way to write 顔 is with the kanji 顔. ⚫︎The reading is かお in hiragana. ⚫︎There are no variations in the okurigana. ⚫︎Less commonly, it might be written entirely in hiragana, かお.

⚫︎顔つき (*kaotsuki*) - facial expression/look ⚫︎面 (*men*) - (formal) face, surface ⚫︎容貌 (*youbou*) - appearance (more formal)

There aren't direct antonyms in the same way as "up" and "down". However, you could consider words related to hiding or covering the face, or to bad appearances.

彼女は恥ずかしくて顔を赤くした。 ・Translation: She blushed from embarrassment. ・Explanation: This sentence describes the physical reaction of a 顔 (face) turning red due to shame.

彼は上司に顔を立てるために、意見を変えた。 ・Translation: He changed his opinion to save face with his boss. ・Explanation: This example demonstrates the more abstract usage of 顔, referring to preserving someone's reputation or dignity.

The etymology of 顔 is not fully agreed upon, but it's believed to be derived from the combination of words related to "eye" and "presence" or "surface", indicating the prominence of the face as the central point of expression and identity.