whether one likes it or not; willy-nilly
Set phrase meaning that something will happen regardless of the person's willingness. Often used when an outcome is unavoidable.
See also: 否が応でも
Whether I like it or not, I have to finish this work by tomorrow.
彼は否でも応でもその計画に参加させられた。
He was made to join the plan, willy-nilly.