まだ details

still + write

mada kaku

still; and with ていない, not yet — the situation has not flipped

meaning: still going to write

慌あわてなくていいよ。まだ間に合うまにあう。

awatenakute ii yo. mada maniau.

No need to rush. We're still going to make it in time. casual

時間じかんはまだ十分じゅうぶんあります。

jikan wa mada juubun arimasu.

There is still plenty of time. neutral

Examples

still — the state or act carries on past the point where it might have stopped

慌あわてなくていいよ。まだ間まに合あう。

awatenakute ii yo. mada ma ni au.

No need to rush. We're still going to make it in time. casual

時間じかんはまだ十分じゅうぶんあります。

jikan wa mada juubun arimasu.

There is still plenty of time. neutral

not yet — with ていない, the expected change has not happened so far

ごはん、まだ食たべてない。

gohan, mada tabetenai.

I haven't eaten yet. casual

申もうし込こみの返事へんじはまだ来きていません。

moushikomi no henji wa mada kite imasen.

The reply to my application hasn't arrived yet. neutral

検査けんさの結果けっかはまだ確認かくにんできておりません。

kensa no kekka wa mada kakunin dekite orimasen.

We have not yet been able to confirm the test results. formal

The continuous "still doing" reading needs ている — まだ寝ねている. まだ also
concedes a comparison: こっちのほうがまだましだ, "the better of two bad
options".

ずっと
Both report a state still in force, but ずっと measures the span behind it and まだ only says the change has not come — ずっと待まっている calls the waiting long, まだ待まっている merely says it is not over.

もうalready-vs-not-yet
The two split one timeline at the change point — もう食たべた reports the change complete, まだ食たべていない reports it pending — and the pairing survives negation crossed over, since もう食たべない ("not any more") answers まだ食たべる ("still going to eat").

また
One vowel apart and both stand before the verb, but また counts a repeat and まだ says the situation is unchanged — また来きた says the person came a second time, まだ来きていない that they have not come at all yet.