Character 咲

Japanese uses 咲 for blooming; Chinese dictionaries link it to laughter.

The history of 咲 has two threads. Chinese dictionaries record it as an older variant of 笑, quoting 《集韻》, a historical Chinese rhyme dictionary, which says 咲 was an old form of 笑; later books and dictionaries kept the link. A Japanese lexicon records the noun さき (“blooming”) in an 8th-century poem in the Man'yōshū, a Japanese poetry anthology, written 佐伎. That dates the word, not the first use of the graph 咲.

One Japanese dictionary traces the laughter-related form to a ritual dancer raising her hands and singing or dancing to please a deity. This is an etymological account of the older form, not a record of its first use.

In Japanese, the verb さく is written 咲く; 花が咲く means “a flower blooms.” This use is distinct from the older Chinese laugh variant.

What does 咲 mean in a message?

Read the language and, in Japanese, the person's name.

In Japanese, 花が咲く means “a flower blooms”; alone, 咲 could also be a name. Name readings さき and さく depend on the person, so do not guess.

In a historical Chinese text, 咲 may mean “laugh” as an older form of 笑. That dictionary-supported sense is not a default reading for a lone character in a modern message.