rue
v. C1 Advanced US //ˈɹu// UK //ɹˈuː// rue
v. to feel regret or sadness about something you did or said. You use this when you wish you had acted differently.
v. to feel remorse or regret for a past action or decision. Transitive; typically followed by the preposition 'over' or 'for' when specifying the cause.
She began to rue her harsh words.
He soon began to rue his decision to skip the safety check.
Years later, the politician would rue the hasty compromise that ultimately cost him his seat and his reputation.
Usage
The verb is transitive and often takes a direct object (e.g., 'rue the day') or is followed by 'over' + noun/gerund.