〜んじゃない？: You use this to guess something. You also use it to ask if someone agrees with your idea.

Dictionary

〜んじゃない？

You use this to guess something. You also use it to ask if someone agrees with your idea.

N3 KMT3CasualSentence Ending ParticleSpoken OnlyCasual Conjecture And AssessmentGrammar

Verb [dictionary form] + んじゃない？Primary

い-Adjective + んじゃない？

な-Adjective + なんじゃない？

Noun + なんじゃない？

You use this to guess something. You also use it to ask if someone agrees with your idea.

「もう終電の時間だよ。そろそろ帰ったほうがいいんじゃない？」

It's already time for the last train. Don't you think it's better to head home soon?

CasualNon PastAffirmativeSentence EndingConjecturalDaily Life Travel & Transportation

「そんなに無理しなくてもいいんじゃない？もう少し休んだら？」

Maybe you don't have to push yourself so hard? Why not rest a little more?

CasualNon PastNegativeSentence EndingConjecturalDaily Life Medicine & Health

「山田さん、今日元気ないね。昨日、何か嫌なことでもあったんじゃない？」

Yamada-san seems down today. I wonder if something unpleasant happened yesterday?

CasualPastAffirmativeSentence EndingConjecturalDaily Life Emotions & Psychology

「彼の態度は、少し無責任なんじゃないかと感じます。」

I feel that his attitude might be a bit irresponsible.

PoliteNon PastAffirmativeMid SentenceConjecturalWork & Career Emotions & Psychology

「最近、目がかすむんだ。もしかして、視力が悪くなったんじゃない？」

My eyes have been blurry lately. I wonder if my eyesight has gotten worse?

CasualPastAffirmativeSentence EndingConjecturalMedicine & Health

This is different from "kamo." "Kamo" just means "maybe." This is also different from "darou." "Darou" is a stronger guess. It is also different from "jan." "Jan" points out something you both know. This form asks if your idea is right.

Watch out: When you use this with a "na-adjective" or a noun, you need to add "na" before "n janai?". For example, say "byouki nan janai?" (maybe you are sick?). Do not say "byouki janai?". That just asks "Are you not sick?".

Use this when you want to say something gently. It helps you share your ideas without being too strong. It makes it easy for others to agree or disagree.

Contrasts with(1)

〜じゃん

This is a casual word you add to the end of a sentence. You use it when you think the other person already knows something. Or maybe they forgot it. It is like saying 'right?' or 'see?' in English.

More formal alternatives(2)

〜じゃね？

You use this to ask if someone agrees with you. It is a casual way to say 'right?' or 'isn't it?'.

〜んじゃね？

You use this to guess something. You also use it to ask if someone agrees with your guess. It is a very casual way to speak.

Dialect / slang variants(1)

〜じゃね？

This is a very casual way to end a sentence. It means "isn't it?" or "maybe...". Men often use it.

辞書形

This is the basic form of a verb. It is what you find in a dictionary. You use it to make other verb forms.

〜い / 〜かった

This is the basic form of an い-adjective. It describes a quality of something. You use it for present or past qualities.

〜だ / 〜だった

This means 'is' or 'was'. It is the casual way to say 〜です and 〜でした.

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Dictionary

〜んじゃない？

You use this to guess something. You also use it to ask if someone agrees with your idea.

N3 KMT3CasualSentence Ending ParticleSpoken OnlyCasual Conjecture And AssessmentGrammar

Verb [dictionary form] + んじゃない？Primary

い-Adjective + んじゃない？

な-Adjective + なんじゃない？

Noun + なんじゃない？

You use this to guess something. You also use it to ask if someone agrees with your idea.

「もう終電の時間だよ。そろそろ帰ったほうがいいんじゃない？」

It's already time for the last train. Don't you think it's better to head home soon?

CasualNon PastAffirmativeSentence EndingConjecturalDaily Life Travel & Transportation

「そんなに無理しなくてもいいんじゃない？もう少し休んだら？」

Maybe you don't have to push yourself so hard? Why not rest a little more?

CasualNon PastNegativeSentence EndingConjecturalDaily Life Medicine & Health

「山田さん、今日元気ないね。昨日、何か嫌なことでもあったんじゃない？」

Yamada-san seems down today. I wonder if something unpleasant happened yesterday?

CasualPastAffirmativeSentence EndingConjecturalDaily Life Emotions & Psychology

「彼の態度は、少し無責任なんじゃないかと感じます。」

I feel that his attitude might be a bit irresponsible.

PoliteNon PastAffirmativeMid SentenceConjecturalWork & Career Emotions & Psychology

「最近、目がかすむんだ。もしかして、視力が悪くなったんじゃない？」

My eyes have been blurry lately. I wonder if my eyesight has gotten worse?

CasualPastAffirmativeSentence EndingConjecturalMedicine & Health

Use this when you want to say something gently. It helps you share your ideas without being too strong. It makes it easy for others to agree or disagree.

Contrasts with(1)

〜じゃん

This is a casual word you add to the end of a sentence. You use it when you think the other person already knows something. Or maybe they forgot it. It is like saying 'right?' or 'see?' in English.

More formal alternatives(2)

〜じゃね？

You use this to ask if someone agrees with you. It is a casual way to say 'right?' or 'isn't it?'.

〜んじゃね？

You use this to guess something. You also use it to ask if someone agrees with your guess. It is a very casual way to speak.

Dialect / slang variants(1)

〜じゃね？

This is a very casual way to end a sentence. It means "isn't it?" or "maybe...". Men often use it.

辞書形

This is the basic form of a verb. It is what you find in a dictionary. You use it to make other verb forms.

〜い / 〜かった

This is the basic form of an い-adjective. It describes a quality of something. You use it for present or past qualities.

〜だ / 〜だった

This means 'is' or 'was'. It is the casual way to say 〜です and 〜でした.

Track your mastery

Kumi's KMT system tracks your mastery across kanji, vocabulary, grammar, and reading. Create a free account to use it on 220,000+ concepts.

〜んじゃない？

Patterns4

Meaning

Examples5

Contrasts1

Common Mistakes1

Discourse Function1

Compare with4

Contrasts with(1)

More formal alternatives(2)

Dialect / slang variants(1)

Prerequisites3

Track your mastery

〜んじゃない？

Patterns4

Meaning

Examples5

Contrasts1

Common Mistakes1

Discourse Function1

Compare with4

Contrasts with(1)

More formal alternatives(2)

Dialect / slang variants(1)

Prerequisites3

Track your mastery