Irregular Verbs

The only two irregular verbs in Japanese do not conjugate with any other verb. These types of verbs are including in the third group. Learners only have to memorize the verbs in order to use them properly. The irregular verbs in Japanese language include the following:

Kuru (to come) 来る / Suru (to do) する


The verb suru "する" is the most popular verb in the Japanese language because plenty of Japanese native speakers use this verb all the time; it is used also to mean “to make” and “to cost”. In addition, the verb suru "する" is combined with many Chinese western nouns so as to create verbs. Here is a list of some examples.

  • Yushutsusuru (輸出する - to export

  • Ryokousuru (旅行する - to travel

  • Benkyousuru (勉強する - to study

  • Dansusuru (ダンスする - to dance

The list below shows the correct conjugation for these two irregular verbs:

Irregular Verbs - Kuru - 来る
  English Kanji Romaji
Plain present positive Come くる Kuru
Plain past positive Came きた Kita
Plain present negative Come こない Konai
Plain past negative Did こなかった Konakatta
Imperative Come こい Koi
Volitional As this / As that こ よう Koyou
Conjunctive Come きて Kite
Conditional If are sure く れば Kureba


Irregular Verbs - Suru - する
  English Kanji Romaji
Plain present positive Make する Suru
Plain past positive Was, Were した Shita
Plain present negative Do not しない Shinai
Plain past negative Did しなかった Shinakatta
Imperative Case せよ or しろ Seyo or Shiro
Volitional Try しよう Shiyou
Conjunctive By, And , To して Shite
Conditional If, By すれば Sureba



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