Is そっか just more slangy? Is そうか the same as saying ああそう? Or, is this more a spoken thing? If so, what is used when writing?

2 Answers 2


I think that

  • そうか is "I see", "really?"
  • そっか is "Ah! I see!", "oh! I understand what you meant!", "ORLY?". The interjection kind of reaction.
  • ああそう is "oooooh? I see". This is something I hear often when people are not convinced at all, but are friendly with you, even playing with you. (Say, you were seen with two different girls the same day, your friends say you're picking up too many girls, and you explain "it's not what you think! one was my sister, and the other was showing me the way!". Your friends would then say "ああそう", and attack again: "but you were holding hands!"…)

In writing, you'd just write "そうですか". Writing (in any language) should be more polite and formal, so as to avoid misinterpretation…

  • そうですか is polite form of そうか.
    – ZarNge
    Aug 26, 2011 at 6:40
  • 1
    We "avoid misinterpretation" by using one common phrase in place of three with different shades of meaning?! Aug 27, 2011 at 6:56
  • btw is it true that there's 2 versions of そっか, one is the high pitch and one is the low pitch, and for the low pitch it doesn't mean "Ah!" / "oh!" but it means "I see." ?
    – Pacerier
    Aug 27, 2011 at 10:31
  • @Karl My remark is not clear and is more general than this question's span, as I was also thinking of a reader who might not see the sarcasm and believe you're being just rude. Hence the reason for taking time to write properly, and give extra details on your mood or intended reply, just in case.
    – Axioplase
    Aug 29, 2011 at 1:48
  • In writing, you'd generally use そうか. Writing doesn't generally use the polite form.
    – Angelos
    Aug 11, 2015 at 23:01

Japanese speakers often use expressions aimed at themselves. Functionally it's like they're talking to themselves, which would sound strange in English speaking countries but is par for the course here. 「そうか・そっか」 is an example of this kind of expression – people make an exclamation ("Oh, OK!") to themselves when they realize something, grasp a meaning, make a logical connection, etc. In these cases デス・マス isn't necessary because it's understood that the speaker is making the statement toward him or herself, and not the other party. While the meaning is essentially the same, the use is different from 「そう〔なん〕ですか」, which is explicitly directing the statement toward the other party for further comment.

To answer your question, there isn't a difference in meaning, but I usually hear the second more often in conversation. Any time the consonant sound is doubled up with the small ッ the meaning becomes more emphatic (e.g., 「すごくおいしい really delicious」 vs 「*すっごく*おいしい REALLY delicious」.

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