Learn Hardcore Turkish: Sahi, boş ver o kartı.

Sahi is a conversational word used to introduce a remembered thought or a side remark. Depending on context, it can feel like by the way, come to think of it, or oh right. It does not affect the core grammar of the sentence; it just sets the tone.

Why is there a comma after Sahi?

The comma shows that sahi is being used as a separate introductory expression. In speech, you would usually pause slightly after it. So the comma reflects natural spoken rhythm.

What exactly is boş ver grammatically?

Boş ver is the 2nd person singular imperative form of boş vermek. In other words, it is a command addressed to you.

The full subject would be sen, but Turkish usually leaves subject pronouns out when they are obvious. So:

(Sen) boş ver = You, forget it / let it go / ignore it

Even though vermek by itself means to give, the expression boş vermek is an idiom and should be learned as a whole.

Is boş ver literal?