想像もできない

can't even imagine

→ 想像
phrase Rare #26,281
can't even imagine も adds emphasis, making the expression stronger than simply 想像できない. Often used for something considered completely unimaginable.
JA: 彼がそんなことをするなんて、想像もできない。
EN: I can't even imagine him doing something like that.

私たちはテレビのない日常生活はほとんど想像もできない

We can hardly imagine everyday life without television.

私はあなたのいない人生なんて想像もできない

I can't imagine my life without you.

だってとにかく想像もできない

I mean, I just can't imagine it.

— 生きる (1952)

この天気外出するなど想像もできない

I can't even imagine going out in this weather.

想像もできない--君がここにを持つって

I can't even imagine you owning a house here.

— ウィキッド ふたりの魔女 (2024)

仮説のない科学など想像もできない

Science without hypotheses is unimaginable.