まだ決めてない

haven't decided yet

→ 未だ
phrase Uncommon #14,765
haven't decided yet An informal, casual form of まだ決めていない. The polite version is まだ決めていません. The final の or んです can add an explanatory or conversational tone.
JA: 週末に何をするか、まだ決めてない。
EN: I haven't decided what to do this weekend yet.

まだ決めてないんだって

They said they haven't decided yet.

まだ決めてないです

I haven't decided yet.

どこに行くまだ決めてないんだ

I haven't decided where to go yet.

どこで休憩をとるべき私達はまだ決めてない

We still haven't decided where to take a break.

まだ決めてない

Haven’t you decided yet?

まだ決めてない

I haven't decided yet.

— ムーンライズ・キングダム (2012)

まだ決めてないんです

I haven't decided yet.

— 魔女の宅急便 (1989)

まだ決めてない

I haven't decided yet.

を買うまだ決めてないんだ

I haven't decided what to buy yet.