親鸞聖人ご修行の地

Japanese conjugation, like the conjugation of verbs of many other languages, allows verbs to be morphologically modified to change their meaning or grammatical function. In Japanese, the beginning of a word (the stem) is preserved during conjugation, while the ending of the word is altered in some way to change the meaning (this is the inflectional suffix). Japanese verb conjugations are independent of person, number and gender (they do not depend on whether the subject is I, you, he, she, we, etc.); the conjugated forms can express meanings such as negation, present and past tense, volition, passive voice, causation, imperative and conditional mood, and ability. There are also special forms for conjunction with other verbs, and for combination with particles for additional meanings. Japanese verbs have agglutinating properties: some of the conjugated forms are themselves conjugable verbs (or i-adjectives), which can result in several suffixes being strung together in a single verb form to express a combination of meanings.

Conjugable words (verbs, i‑adjectives, and na‑adjectives) are traditionally considered to have six possible conjugational stems or bases (活用形, katsuyōkei; literally "conjugation forms"). This article lists those from the negative base (未然形, mizenkei), as well as the tentative base (推量形/意思形, suiryōkei/ishikei) that was split off during the post‑WWII spelling reforms.