It is too true - as I fear your friends may discover to their bitter regret.

Relief shook him, and bitter regret I wanted out, he thought.

"We didn't give them any weapons," Kirk said with bitter regret.

That was a bitter regret to the management team, especially since our company is closely integrated with the local community.

I began to face the future instead of wasting myself in bitter regret over a past that was beyond my reach.

And even worse is the bitter regret of how things might have been.

I didn't hear that from my mother," she added, and there was bitter regret in her voice.

It was a decision that he was to look back on later with bitter regret.

To his bitter regret, he decided it would not be possible to be present himself at the interview.

The holocaust of the morning filled him with bitter regret.