“Irregular conjugation” in Japanese
Short answer
Irregular conjugation in Japanese is “変格活用” (henkakukatsuyou). Full meaning: irregular conjugation (declension, inflection), irregular verb.
Other ways to say “Irregular conjugation” in Japanese
変格
henkaku irregularity, irregular conjugation; translative
不規則活用
fukisokukatsuyou irregular conjugation
不規則変化
fukisokuhenka irregular conjugation
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