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I am writing the following sentence:

サン・パウロに日本人がいっぱいいるから。。。よかったですね！

And I'd like to know if 幾人も could be a more respectful/more natural
replacement for 一杯, and whether I should be using kanji.
CC BY-SA 3.0
2017-01-11T08:10:35.813
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question
kanji politeness counters idioms
幾人も or 一杯? Kanji or hiragana?
幾人も isn't a more respectful/more natural replacement for 一杯 and it is a very
literary word, so we rarely say it in conversation.

You can put いっぱい into たくさん, かなり, 大勢. いっぱい written in hiragana is more common
than the one written in kanji.
CC BY-SA 3.0
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> 「サン・パウロ **に** 日本人がいっぱいいるから。。。よかったですね！」

This sentence is OK. The only thing I would change to make it more natural
would be the 「に」. Using 「には」 would make it far more natural.

> And I'd like to know if 幾人{いくにん}も could be a more respectful/more natural
> replacement for 一杯{いっぱい}, and whether I should be using kanji.

Using 「幾人も」 in this context would be a bad idea. Why? Because it only means
"many" mostly when the number is a dozen or two **_at the most_**. São Paulo
has about a million Japanese and Japanese Brazilians, correct? That is
definitely **_way_** too many to call 幾人も.

I would not worry about writing 「いっぱい」 using kanji. Your sentence is already
very informal with the use of 「から」 and 「よかったですね！」. 「から」 is more informal than
many J-learners seem to think.
CC BY-SA 3.0
2017-01-11T13:20:21.473
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