さえなければ

if only … weren’t

→ さえ
phrase Rare #34,388
if only … weren’t Used to express that something would be better or possible if a particular thing were absent.
JA: 雨さえなければ、散歩に行けるのに。
EN: If only it weren’t raining, I could go for a walk.

月曜日さえなければ月曜日さえなければ

If only there were no Mondays, if only there were no Mondays.

— Бриллиантовая рука (1969)

この欠点さえなければ、さっそく彼を雇うのだが。

If it weren’t for this one flaw, I’d hire him right away.

頭痛さえなければいくのだが。

If it weren't for my headache, I'd go.

英語の試験さえなければいいのに。

If only there weren’t an English exam.