1. regret - Noun
2. regret - Verb
Dislike; aversion.
Pain of mind on account of something done or experienced in the past, with a wish that it had been different; a looking back with dissatisfaction or with longing; grief; sorrow; especially, a mourning on account of the loss of some joy, advantage, or satisfaction.
To experience regret on account of; to lose or miss with a sense of regret; to feel sorrow or dissatisfaction on account of (the happening or the loss of something); as, to regret an error; to regret lost opportunities or friends.
Source: Webster's dictionaryYouth is a blunder, manhood is a struggle and old age a regret. Benjamin Disraeli
I only regret that I have but one life to lose for my country. Nathan Hale
Perform good deeds; you will not regret them. Moroccan Proverb
Who got it, did get it; and who left it, did regret it. Algerian Proverb
Who promises a lot will regret a lot. Estonian Proverb