regret (part of speech: noun)
- If everyone had a heartache like hers, or even the memory of such a heartache, it would make too monstrous a world, too deplorable a human race.
- Had he spoken frankly he would have saved Elsa many a bitter heartache, many a weary day. - "Parrot & Co.", Harold MacGrath.
- Greek, for once, failed to ease his heartache, and the Iliad seemed singularly over- strained and deadly dull. - "God's Good Man", Marie Corelli.