Ichidan verb

伸びるのびる

nobiru

to stretch · N3

伸びる (のびる, nobiru) — to stretch — is an ichidan verb: 伸びて (te-form), 伸びた (past), 伸びない (negative), 伸びます (polite).

It also means to extend; to lengthen.

How 伸びる conjugates · ichidan verb

Drop the る, then add the ending.

Nothing else moves: every ending attaches straight to the stem 伸び. That is what makes ichidan the easy class.

伸びる dropsstem + ending

伸びない伸びないnegative · It doesn't stretch. 伸びます伸びますpolite present 伸びて伸びてte-form · It stretches and … 伸びた伸びたpast · It stretched. 伸びられる伸びられるpotential 伸びれば伸びればif · If it stretches, ... 伸びよう伸びようvolitional

No sound changes and no vowel rows. The catch is telling ichidan from godan: plenty of godan verbs end in る too.

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

Form	Conjugation	Audio
present N5	伸びるのびる nobiru
past N5 It stretched.	伸びたのびた nobita
negative N5 It doesn't stretch.	伸びないのびない nobinai
te-form N5 It stretches and …	伸びてのびて nobite
past negative N4 It didn't stretch.	伸びなかったのびなかった nobinakatta
volitional N4	伸びようのびよう nobiyou
potential N3	伸びられるのびられる nobirareru
cond. ば N3 If it stretches, ...	伸びればのびれば nobireba
cond. たら N3 When it stretches, ...	伸びたらのびたら nobitara
passive N2	伸びられるのびられる nobirareru
causative N2	伸びさせるのびさせる nobisaseru
imperative N1	伸びろのびろ nobiro

POLITE

Form	Conjugation	Audio
present N5	伸びますのびます nobimasu
past N5 It stretched.	伸びましたのびました nobimashita
negative N5 It doesn't stretch.	伸びませんのびません nobimasen
past negative N4 It didn't stretch.	伸びませんでしたのびませんでした nobimasendeshita
volitional N4	伸びましょうのびましょう nobimashou

ASPECT

Form	Conjugation	Audio
ている N4 It's stretching.	伸びているのびている nobiteiru
ていた N4 It was stretching.	伸びていたのびていた nobiteita
ています N4 It's stretching.	伸びていますのびています nobiteimasu
ていました N4 It was stretching.	伸びていましたのびていました nobiteimashita