How is “as yet” used?

In Raising Arizona (1987), one line is: “Well, we don't have any leads as yet, aside from the coat.”

Which movie is “as yet” from?

The clip at the top of this page is from Raising Arizona (1987).

Well, we don't have any leads as yet, aside from the coat.

8 作品で登場 · 1 本目

until now or until a particular time in the past

13 本の映画に登場

オックスフォード映画の 100%
until now or until a particular time in the past
And blood from a third party, as yet unidentified.

定義：Oxford Advanced Learner's Dictionary 第 9 版