Kanji use in these words, 今 vs 未


I'm learning vocabulary from 日本語総まとめN2. In one section they describe four
words and group them together (I assume because they have slightly different
meanings but somewhat similar). They group them with an example as follows:

> 今に ： そんなことをしていると、今に後悔しますよ。
>
> 今にも： 今にも雨が降りそうだ。
>
> 今更 ： 今さらできないといわれても困る。
>
> 未だに： 未だにその事件は解決していない。

I was wondering why 「未」 is used. Why not 「今」? Possibly I'm misunderstanding
why this kanji is used because I don't know any other words with 「未」 that hold
the pronunciation 「いま」.




I think it can be either written as 未だに or 今だに, but probably the former is the
official one. This is an example where the difference between ancient Japanese
and Chinese is relevant. The Japanese native word いまだに comes from いま 'now',
whose concept is written as 今 in Chinese, as you wrote, but Chinese had
another concept 未 'not yet', which would better fit with いまだに, so the latter
came to be written as 未だに.




I think it can be either written as 未だに or 今だに, but probably the former is the
official one. This is an example where the difference between ancient Japanese
and Chinese is relevant. The Japanese native word いまだに comes from いま 'now',
whose concept is written as 今 in Chinese, as you wrote, but Chinese had
another concept 未 'not yet', which would better fit with いまだに, so the latter
came to be written as 未だに.

