Structure Legend
Structure
Verb + (んだ) + もの(1)
い-Adj + (んだ) + もの(1)
な-Adj + (なん) + だ + もの(1)
Noun + (なん) + だ + もの(1)
(1) もん
Details
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Standard
使用域
一般
Rare Kanji
物
About もの・もん
もの, an extremely common noun in Japanese that means 'thing', can also be used as a sentence ending particle. In these cases, it adds a small amount of emotion to a statement, and presents it as a reason. Due to this, もの is usually translated as 'because', or 'cause'. Literally, it just means 'it's an (A) thing!'. もの is quite casual, so should be avoided in formal situations.
To use もの as 'because', attach it to the end of the plain form of any word.
To use もの as 'because', attach it to the end of the plain form of any word.
- あなたが言う事は何も信じられないわ。だって、あなたはいつも嘘をつくもの。I can't believe anything you say. Cause you always lie.
- だって、彼女が悪いんだもの。Cause she is the one in the wrong.
- これはあなたにあげられない。大切だもの。I can't give this to you, cause it is important.
- すぐ泣くに決まってるじゃん、まだこどもだもの。Of course he will cry, cause he is still a child.
- エアコンをつけて寝ているよ。だって、暑くて寝れないんだもの。I sleep with the A/C on. Cause it's so hot that I can't sleep, you see.
- この子は失敗するに決ってるでしょう、まだ新人なんだもの。Of course this kid will make mistakes. Cause he's still new here.
Caution
もの can be shortened to もん in its use as a sentence ending particle. However, this makes the statement sound far more 'cute' or 'childish'. Due to this, it should be avoided in standard conversation.- もうお腹いっぱいだもん。Cause I'm already full.
- いいよ、お前とはもう遊ばないもん!It's all good! (Because) I'm not going to play with you anymore! (Showing mild anger/jokingly)
Fun Fact
Although it is not used regularly in standard Japanese, んですもの is a slightly more polite version of んだもの that appears frequently in anime, manga, and novels.- こんなものすぐに壊れるに決まっているじゃないですか、紙から出来てるんですもの。Of course something like this will break instantly. (Because) it is made of paper.
- しょうがないですよ、あの人は何も考えていないんですもの。We can't help it. (Because) that person doesn't think about anything.
Synonyms
Examples
彼女は嘘をついているもの。
(Because) she is lying.
怒らないでね。子供なんだもん。
Don't be angry. (Because) he is just a kid.
まずいんだもん。
(Because) it tastes bad!
僕はそう感じたんだもん。仕方ないじゃない?
(Because) that's how I felt. It can't be helped, right?
寒いんだもん。風邪をひいてしまうよ。
(Because) it's freezing. I'm gonna catch a cold, man!
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Online
もん
JLPTSensei
接続・意味・使い方・例文
にほんごの里
Offline
Tae Kim's Japanese Grammar Guide
Page 238
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もの・もん – Grammar Discussion
Most Recent Replies (10 in total)
shary
About 2 years ago
Good news everyone.
We can add a video from Japanese Ammo with Misa (Make Excuses & Justify Yourself Like the Japanese もん/もの/んだもん!JLPT N2 - YouTube) in the readings for this grammar point and also https://bunpro.jp/grammar_points/346
FredKore
About 1 year ago
The Information section of the grammar page needs to be cleaned up. The words “because” and “cause” are not the same meaning. When “because” is shortened in casual conversation, an apostrophe is used to show the contraction:
do not → don’t
should not → shouldn’t
because → 'causeWithout the contraction apostrophe, the word “cause” is a different meaning.
'cause Definition & Meaning - Merriam-Webster
Cause Definition & Meaning - Merriam-Webster
Because Definition & Meaning - Merriam-Webster
(notice the Synonym section for “because” includes “'cause”)bokudake
About 1 day ago
Is なのだもの wrong? Because it sounds unnatural?
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