四字熟語 — Open Dataset

四字熟語Open Dataset

Every four-character idiom JMdict marks yoji, normalised so it can be looked up — spelling variants merged, odoriji resolved, each character joined to its KANJIDIC2 entry.
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This page uses the JMdict and KANJIDIC2 dictionary files, the property of the Electronic Dictionary Research and Development Group, used in conformance with the Group's licence (CC BY-SA 4.0). The derived dataset shown here is released under the same licence.
Frequency and rarity marks are JMdict's own. Where they are absent, this page says so rather than estimating — that gap is real, and it is the reason the project exists.