Katsuyo

い-adjective

素早いすばやい

subayai

quick · N1

素早い (すばやい, subayai) — quick — is an -adjective: 素早かった (past), 素早くない (negative), 素早くて (te-form), 素早いです (polite).

It also means swift; nimble.

How 素早い conjugates · -adjective

Drop the final , then add the ending.

Every form is built on the stem 素早. The one that isn't: the polite present, which is the whole word plus です.

素早 dropsstem + ending
素早かった素早かったpast · It was swift. 素早くない素早くないnegative · It isn't swift. 素早くて素早くてte-form · It's swift and … 素早ければ素早ければif · If it's swift, ... 素早いです素早いですpolite presentkeeps the い

Every -adjective works this way. The one exception is いい, which conjugates from its older form よい.

N5 N tags give the JLPT level at which the game starts quizzing a form.

Aa Dimmed forms are too rare in everyday Japanese for the game to quiz.

PLAIN

FormConjugationAudio
present N5 素早い すばやい subayai
past N5 It was swift. 素早かった すばやかった subayakatta
negative N5 It isn't swift. 素早くない すばやくない subayakunai
te-form N5 It's swift and … 素早くて すばやくて subayakute
past negative N4 It wasn't swift. 素早くなかった すばやくなかった subayakunakatta
cond. ば N3 If it's swift, ... 素早ければ すばやければ subayakereba
cond. たら N3 素早かったら すばやかったら subayakattara

POLITE

FormConjugationAudio
present N5 素早いです すばやいです subayaidesu
past N5 It was swift. 素早かったです すばやかったです subayakattadesu
negative N5 It isn't swift. 素早くないです すばやくないです subayakunaidesu
past negative N4 It wasn't swift. 素早くなかったです すばやくなかったです subayakunakattadesu