have to; have no choice but to; cannot help (doing); be compelled to; be obliged to; be forced to
締め切りが迫っているので残業せざるを得ない。
The deadline is approaching, so I have no choice but to work overtime.
証拠を見せられて認めざるを得なかった。
I was shown the evidence and had no choice but to admit it.
予算の関係で計画を縮小せざるを得ない。
Due to the budget, we have no choice but to scale down the plan.