もの / もん
🃏 Flashcard
もの / もん
mono / mon
Tap to reveal usage
because; reason/ excuse/dissatisfaction
N2
Tap to test your recall · +10 XP
📊 Pattern Stats
JLPT Level
N2
Upper-Intermediate · Academic & formal usage
Reading
mono / mon
Post ID
51062
Patterns today
0
0 / 10 daily goal
📝 Usage Notes
because; reason/ excuse/dissatisfaction
📖 How to use it
Explains a reason or excuse, often with a sense of dissatisfaction or justification.
Attaches to
Attaches to the plain form of verbs, adjectives, or noun+だ/な (e.g., 高いもの, 行くもの, 学生だもの). In casual speech, もの often becomes もん.
もの is used at the end of a sentence to give a reason or excuse, often sounding defensive or like you're complaining. It's common in spoken Japanese, especially in arguments or when justifying yourself. The casual form もん is more informal and emotional, often used by children or in close relationships.
When you use もの, you're not just stating a fact—you're implying that the listener should understand or accept your reason. It can sound a bit whiny or stubborn, so be careful in polite contexts. In writing, it's often used in dialogue or casual text.
だって、こわいんだもん。
Datte, kowai n da mon.
Because I'm scared, that's why!
一人で行きたくなかったんだもの。
Hitori de ikitakunakatta n da mono.
I didn't want to go alone, you know.
時間がなかったんだもの。
Jikan ga nakatta n da mono.
I didn't have time, that's why.
Not から (because)
から is neutral and straightforward; もの/もん adds a defensive or emotional nuance, often used to justify oneself or complain. から is fine in polite speech, but もの/もん is casual and can sound childish.
Register
Spoken, casual; もの is slightly softer than もん, which is very informal and emotional. Avoid in formal writing or polite conversation.
🎯 Quick Quiz
What does this grammar pattern mean or do?
もの / もん
📚 How to Master This Pattern
Say It Aloud
Press Hear it and repeat もの / もん three times. Feel the rhythm — grammar patterns have a natural flow.
Flip Before Reading
Always try to recall the usage before flipping the card. Struggle = learning. Every failed recall makes the next one stick harder.
Write Two Sentences
Compose two original sentences using もの / もん. One about yourself, one about something you see right now.
Spaced Review
Save this pattern and revisit at 10 min, 1 day, 3 days. Production (writing) beats recognition for grammar.
🔗 More JLPT N2 Patterns
❓ Frequently Asked Questions
What does the grammar pattern もの / もん mean?
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Because; reason/ excuse/dissatisfaction
What JLPT level is もの / もん?
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Nihoner currently groups this pattern under JLPT N2 — Upper-Intermediate · Academic & formal usage. Use the level label as study guidance rather than a prediction of what will appear on an exam.
How do you use もの / もん in a sentence?
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Attach もの / もん (mono / mon) to the appropriate verb or noun form as described in the usage notes. Then try writing two original sentences — one about yourself and one about something around you.
Is もの / もん formal or casual Japanese?
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もの / もん is used in formal or written contexts. You will see it mainly in written texts, news, business Japanese and academic contexts.
How can I remember もの / もん long-term?
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Use the flashcard on this page for active recall — see the pattern, reconstruct the usage from memory, then flip. Follow with the 4-choice quiz to distinguish it from similar patterns. Review later the same day and again over the following days. Writing original sentences can help you practise using the pattern in context.