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When writing on Lang-8, I often end up writing both formal and casual versions
(for practice), with labels. I also wish occasionally to discuss formality,
and thus need words to talk about the different levels.

With formal language, 丁寧語｛ていねいご｝ is pretty universal. ( _Keigo_ is another
story, but I think I understand its terms pretty well.) However, over time, I
have tried (and been corrected many times) to use various words for casual
language, and never found the right one.

  * タメ語｛ご｝： I was told this was often used as a gambler's slang and that it was a bit too rough to use in average casual language.
  * 友達言葉｛ともだちことば｝： No one has ever told me anything is wrong with this, but it is frequently corrected to various other terms below.
  * 普通体｛ふつうたい｝： Seen this one only once, and I've never even heard of it before that.
  * くだけた表現｛ひょうげん｝： Was given this one today in place of 友達言葉.
  * カジュアル： The loanword for "casual", and I've been told to use it a couple times.

What is the difference between the language represented by these various
words? Are some more acceptable than others? Are some more formal?

And most importantly, **how do I know which of these words to use to talk
about casual, friendly language?**
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2015-03-31T01:26:17.790
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2015-05-29T04:07:32.267
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question
word-choice nuances
What do I actually call familiar or friendly language?
It depends on what you're specifically trying to say.

# Linguistics

If you're trying to _specifically_ contrast 「です」・「ます」 vs 「だ」・「る」, then you
have a few options:

  1. Use **「敬体」** and **「常体」**.

(Note that they refer to the _style_ (文体), not specific _words_ like, say,
「丁寧語」 does; that is, 敬体≒丁寧語を用いた文体. If you are being anal about it.)

However, if you use these, no one will understand you except linguists or very
well-read people, which should make sense, given that it's not normally useful
to contrast this specific aspect of the language and the words are not
particularly intuitive.

  2. Use **「丁寧体」** and **「普通体」**.

They are an, in my opinion, slightly more intuitive pair (which also refer to
文体s); however they are just as uncommon and also currently only in used by
linguist-types AFAIK.

  3. Use **「ですます体（or 調）」** and **「だ体」**.

「ですます体」 is probably the most intuitive word that refers to 敬体・丁寧体, and is
pretty common. 「だ体」 is also pretty intuitive, yet I feel like I rarely see it
used compared to 「ですます体」.

  4. Use **「丁寧語」** and ☹.

This is this most common of all the technical words; that said, it is still a
technical word (and its technical meaning is slightly different from 「丁寧体」 as
earlier described, but no one really cares about this to be honest :-).
Understood by virtually anyone.

# General Concepts

If you want something that people would understand, I'd personally recommend
**「敬語」** and **「タメ口」** -- there's no one that won't understand that pair.

In common speech, they mean "respectful speech" and "casual speech"
respectfully; basically they are as general as the English translations sound.
So, 「タメ口」 doesn't just mean using 「だ」 but also contractions like 「ちゃう」 ,
endings like 「な」, 呼び捨て, etc, etc.

(Note, there are some people that will complain that 「敬語」 refers to
specifically 謙譲語 and 尊敬語. But in common speech it really does just mean
"respectful speech" as a general concept.)

Regarding the other things you listed:

  * 「タメ語」 basically means the exact same thing as 「タメ口」, though I think it's slightly less common.
  * 「くだけた表現」 doesn't really refer to a style but to an expression if we're trying to nitpick. However, 「くだけた口調」 seems like something worth discussing. I feel the difference here is that it's pointing out a different aspect of style than 「タメ口」 to me -- I feel like a sentence using です・ます could be described as くだけた口調, as long as, well, it's くだけた (relaxed/informal) -- like say 「そうですねー！僕も行きたいです＾＾」. I'd be more reluctant to call that タメ口 but would call it くだけた口調. (This is purely my opinion.)
  * 「友達言葉」 seems pretty similar in meaning to 「タメ口」 to me -- I just think it's less common an expression.
  * 「カジュアル」 is just an adjective -- if you said something like 「カジュアルな口調」 I think it'd basically mean the same as タメ口. Has the benefit of being pretty intuitive like 「くだけた」.

# tl;dr

I'd use 「タメ口」 almost always. Possibly use 「だ体」 or 「常体」 if I'm talking
linguistics.
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2015-05-29T04:07:32.267
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2015-05-29T04:07:32.267
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answer