不ふ規き則そく変へん化かMeanings1nounirregular conjugationgrammar›Linguistics term for verbs or adjectives that do not follow regular inflection patterns, such as する, 来る, or 良い.日本にほん語ごの不ふ規き則そく変へん化かの代だい表ひょう例れいは「する」と「来くる」です。Typical examples of irregular conjugation in Japanese are 'suru' and 'kuru'.