не придумаешь

can't think of / come up with

→ не
phrase Uncommon #23,293
can't think of / come up with Often used literally to mean “can't think of” or “can't come up with.” In phrases such as лучше не придумаешь and хуже не придумаешь, it means “it couldn't be better” and “it couldn't be worse,” respectively.
RU: Хуже не придумаешь.
EN: It couldn't be worse.

Да это жесть, хуже не придумаешь.

This is brutal, you couldn't imagine anything worse.

— 1+1 (2011)

Папа, он назвал меня Джагат Джанани, хуже не придумаешь.

Dad, he called me Jagat Janani—it couldn’t get any worse.

— ПиКей (2014)

Лучше не придумаешь.

It doesn’t get any better than this.

— Любовь – болезнь (2017)

Лучше не придумаешь, верно?

You couldn't ask for better, right?

— Дьяволицы (1955)