Nihoner
すまなかった
sumanakatta
sorry, my bad
All Senses
  1. sumanakatta sorry, my bad
How it's used

Use in casual situations to apologize to friends or peers; it is the past tense of 'sumanai' and sounds more sincere than a quick 'gomen'.

昨日は本当にすまなかった。
Kinou wa hontou ni sumanakatta.
I'm really sorry about yesterday.

待たせてすまなかったね。
Matasete sumanakatta ne.
Sorry for making you wait.

⚖️ Often confused with 'sumimasen' (more formal and also used for thanks), while 'sumanakatta' is a direct, casual apology in past tense.

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How to Use This Word
Noun (名詞)
Pattern
すまなかったは〜です。 / 〜のすまなかった

💡 Use は or が to mark this word as the topic or subject of a sentence.

Example
このすまなかったはとても大切です。
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Found in a wide range of contexts. Useful for building reading and listening fluency.

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Lv 1
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🟡 Medium

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