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Sometimes there are situations when you'd like to describe someone saying
something, but what exactly he says is less important than the rest of
sentence and it can be easily ignored. Or in case when someone is saying some
long and tedious speech and in your sentence you're just using "bla-bla-bla"
instead. What's the word Japanese would use in such cases?

Other situation is when part of sentence is missing. In most cases during
lessons or exercises. (Or when you heard something all but one word missing
and describing it to someone.) Teacher then uses some substitute word like
"something-something" instead, just to keep the pace when reading. What's the
word Japanese would use in such cases?
CC BY-SA 3.0
2013-05-30T08:36:37.227
12011
2013-11-07T19:07:43.490
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question
usage spoken-language
What's the substitute word for missing/unimportant part of sentence?
The usual placeholder in Japanese is 「なになに」, although type-specific
placeholders such as 「だれだれ」 and 「なんとかなんとか」 may be used.
CC BY-SA 3.0
2013-05-30T10:04:20.210
12012
2013-05-30T10:04:20.210
22
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answer
You also have なんちゃら in the Kansai area.
CC BY-SA 3.0
2013-05-30T10:11:29.767
12013
2013-05-30T10:11:29.767
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answer