In [dictionary
examples](http://ejje.weblio.jp/sentence/content/%E5%A4%9A%E5%BD%A9%E3%81%AA)
for 多彩な there is a sentence:

> メニューにはいろいろ多彩な料理があった。  
>  There was a great variety of dishes on the menu.

Isn't いろいろ多彩な a
[tautology](https://en.m.wikipedia.org/wiki/Tautology_\(grammar\))? Do いろいろ
and 多彩 convey a different meaning? Is there a difference between the above
sentence and the following?

> メニューにはいろいろ料理があった。
>
> メニューには多彩な料理があった。

Is it an emphasis of some sort, or just a quirk in the body of examples?
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meaning
Isn't いろいろ多彩な a tautology?
いろいろ is used to express the meaning "various". So 色々【いろいろ】多彩【たさい】 sounds like
it emphasizes that there was a _great_ variety (not just _some_ variety) to
me.

That being said, I don't think any language (Japanese included) puts
restrictions on using tautologies or being redundant with adjective choice and
such. This particular construction (色々【いろいろ】多彩【たさい】) may be a collocation
(things that often come together) to some extent. (A Google search for those
terms together gave me ~2.4k results).

In English, similar things are sometimes done. For
[example](https://www.dailywritingtips.com/7-redundant-adjectives/):

  * free gift
  * closed fist
  * overused cliché
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Tautology is an unnecessary repeating of the same idea in different words, as
in the sentence _He sat alone by himself_. In this case, I agree with the
explanation that **alone** is redundant.

However, depending on the case, I think it is not always redundant to repeat
the same idea in different words. It occurs when words such as adjectives of
the language are insufficient to fully express the situation or emotion. I
think this is a phenomenon that occurs not only in English and Japanese but
also in any language.

"色々｛いろいろ｝な果物｛くだもの｝ _various fruits_ " or "多彩｛たさい｝な果物｛くだもの｝
_variegated/colorful fruits_ " is sufficient to express the above picture, but
how do you tell the picture below to him who is supporting you? You would
realize soon that adjectives such as "色々｛いろいろ｝な" or "多彩｛たさい｝な" alone are
insufficient to convey your excitement to him.

[![enter image description
here](https://i.stack.imgur.com/lAl3z.jpg)](https://i.stack.imgur.com/lAl3z.jpg)
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