四字熟語辞書 app for iPhone and iPad
Yojijukugo Dictionary.
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Yojijukugo (四字熟語?) is a Japanese lexeme consisting of four kanji, or "Chinese characters". English translations of yojijukugo include "four-character compound", "four-character idiom", "four-character idiomatic phrase", and "four-character idiomatic compound".
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