不说就

if you don't say (it), then

→ 不
phrase Rare #20,965
if you don't say (it), then Often introduces a consequence or threat; 不说 can mean “don't tell” in context.
CH: 你不说就不能走。
EN: If you don't tell me, you can't leave.

不说就甭想回去说,说不说?

If you don’t talk, don’t even think about going home. Speak up—are you going to talk or not?

— 一个都不能少 (1999)

凯蒂,不说就宰了你

Katie, tell me or I'll kill you.

— 神秘河 (2003)

不说就甭想睡觉!

If you don't tell me, forget about sleeping!

— 一个都不能少 (1999)

逼问她宝藏的事不说就不给她吃的

They interrogated her about the treasure and refused to feed her unless she talked.

— 塔巴德 (2018)

不说就给我待在这儿,这一夜都不让你睡!

If you won't talk, you're staying right here, and I won't let you sleep all night!

— 一个都不能少 (1999)

不说就别想出来

If you don’t say it, don’t even think about coming out.

— 蔷花,红莲 (2003)