I found a bit interesting bits on them through some research, but nothing about what the grammatical rules are for using them all. Any ideas?

  • 1
    I'm pretty sure there aren't any rules, they serve as breaks in a conversation (usu. for the speaker as they are thinking) so if there were rules that would kind of defeat their purpose. Think of "um" or "uh" in English, are there rules for that?
    – ishikun
    Commented Oct 24, 2016 at 17:09
  • Fair enough. What are some of the more commonly used filler words in Japanese, though? Commented Oct 24, 2016 at 18:32
  • You've got most of them down :P, I can't think of anything else right now
    – ishikun
    Commented Oct 24, 2016 at 19:29

1 Answer 1


Fillers are speech disfluency. It's part of speech but not grammar. Use them to fill voids in speech just like English speakers use "Um..", "well..", "like.."

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