Explore each form from the oldest known stage to today.
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The kanji 押 is a phono-semantic compound, formed during the Shuowen Jiezi era (c. 100 AD) in China. Its semantic component is the radical 扌(手), meaning "hand," which directly indicates the character's association with a hand-action. The phonetic component is 甲 (*kɑp in Old Chinese), which provided the sound. The original meaning of 甲 was "armor" or "shell," and while it doesn't contribute meaning here, its historical final *-p sound is crucial. This *-p was a stop consonant that influenced the character's pronunciation, evolving in Middle Chinese to a final -p, making it a *rusheng* (entering tone) character, pronounced something like *'ʔɑp̚'. Historically, 押 was created to represent the concept of pressing down or applying pressure from above, an extension of the basic "push" action. It could mean to seal or stamp (by pressing a seal), to suppress, or to detain. This character, along with thousands of others, was introduced to Japan in waves, primarily through Buddhist scriptures and other Chinese texts from around the 5th century AD. It was incorporated into the Japanese writing system as a *kanji*, and its *on'yomi* reading オウ (ō) derives from the Middle Chinese pronunciation. The native Japanese *kun'yomi* お.す (o.su) was assigned to it based on its meaning. A key linguistic note is the connection between 押 and another kanji, 壓 (the traditional form of 压). Both can mean "to press," but 押 often carries a nuance of pushing forward or applying pressure on a surface, while 壓/压 implies a stronger, downward pressure to suppress or crush. This distinction is often maintained in compound words. Furthermore, the entering tone final -p from Middle Chinese was lost in Japanese pronunciation, but it is preserved in other Sino-xenic languages like Korean (압 [ap]) and Vietnamese (áp).