Godan verb (む)

凹むへこむ

hekomu

to be dented · N2

凹む (へこむ, hekomu) — to be dented — is a godan verb ending in む: 凹んで (te-form), 凹んだ (past), 凹まない (negative), 凹みます (polite).

It also means to be indented; to yield.

How 凹む conjugates · godan む-verb

Only the last kana changes: む becomes ま, み, め or も.

Which one depends on the ending. The five are one line of the hiragana chart — same consonant, vowels あ・い・う・え・お — and everything before that kana never changes.

ま凹まないnegative

み凹みますpolite present

む凹むdictionary form

め凹めるpotential凹めばif

も凹もうvolitional

The て and た forms · む → んで, んだん凹んでte-form凹んだpast

The て and た forms are the only two that don't follow this pattern. Every む-, ぶ- and ぬ-verb has the same んで there.

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	凹むへこむ hekomu
past N5 It got dented.	凹んだへこんだ hekonda
negative N5 It doesn't get dented.	凹まないへこまない hekomanai
te-form N5 It gets dented and …	凹んでへこんで hekonde
past negative N4 It didn't get dented.	凹まなかったへこまなかった hekomanakatta
volitional N4	凹もうへこもう hekomou
potential N3	凹めるへこめる hekomeru
cond. ば N3 If it gets dented, ...	凹めばへこめば hekomeba
cond. たら N3 When it gets dented, ...	凹んだらへこんだら hekondara
passive N2	凹まれるへこまれる hekomareru
causative N2 I make it dent.	凹ませるへこませる hekomaseru
imperative N1	凹めへこめ hekome

POLITE

Form	Conjugation	Audio
present N5	凹みますへこみます hekomimasu
past N5 It got dented.	凹みましたへこみました hekomimashita
negative N5 It doesn't get dented.	凹みませんへこみません hekomimasen
past negative N4 It didn't get dented.	凹みませんでしたへこみませんでした hekomimasendeshita
volitional N4	凹みましょうへこみましょう hekomimashou

ASPECT

Form	Conjugation	Audio
ている N4 It's dented.	凹んでいるへこんでいる hekondeiru
ていた N4 It was dented.	凹んでいたへこんでいた hekondeita
ています N4 It's dented.	凹んでいますへこんでいます hekondeimasu
ていました N4 It was dented.	凹んでいましたへこんでいました hekondeimashita