Grammar detail: いい, よい and 良い

いい, よい and 良い - forms of good
137 words
My current mastery of this grammar point:
LOG IN to view grammar mastery data
いい is a special case of an い adjective. When inflected, the first い is typically replaced by よ. When written with kanji, the first syllable is sometimes read as い, and sometimes read as よ.
いい can also be appended to nouns to create a special class of adjectives that are inflected in the same way as いい. There are about 90 or so of these in Japanese. Some common examples include かっこういい, 品のいい, 気持ちいい, 運のいい.
For many of these unusual adjectives, various forms exist: sometimes the いい is represented in kana, and sometimes in kanji; sometimes の is placed between the word and the いい part and sometimes not; sometimes が is placed there and sometimes not. So for example, 質がいい might be seen in any of the following forms: 質が良い, 質がよい, 質のいい, 質の良い, 質のよい.
LOG IN to view flashcard data

Kanji used in this grammar

ヒン    elegance   しな goods   
キ   ケ    spirit   
Please LOG IN to view this kanji's mnemonic
ジ   も to hold, to have   
Please LOG IN to view this kanji's mnemonic
ウン   carry; luck   はこ to carry   
Please LOG IN to view this kanji's mnemonic
シツ   シチ   チ    quality; substance   
Please LOG IN to view this kanji's mnemonic
リョウ   よ good   
Problem with this grammar? Question or comment? Please CONTACT US.
Kanshudo is your AI Japanese tutor, and your constant companion on the road to mastery of the Japanese language. To get started learning Japanese, just follow the study recommendations on your Dashboard. You can use Quick search (accessible using the icon at the top of every page) to look up any Japanese word, kanji or grammar point, as well as to find anything on Kanshudo quickly. For an overview, take the tour.