What is the difference between ~げ and ~そう
What is the difference between 〜げ and 〜そう?
Consider for example:
Or are they synonyms?
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They are very similar, however there is a slight difference in nuance. げ implies a stronger sense of uncertainty compared to そう.
So, in your first example, you are not certain whether he wanted to say something or not, while in the second example, you are almost certain that he wants to say something.
If you saw the person and noticed that they were laughing, smiling, etc. You are most likely to use version #1 and not version #2 because you are confident about your conjecture.
However, although in standard dialect there is the distinction I mentioned above, in some dialects (and in young people's slang) they do no make this distinction and げ is used commonly to mean そう.