regret
Definitions
A feeling of sadness, repentance, or disappointment over something that has happened or been done.
To feel sad, repentant, or disappointed over an occurrence or something that one has done or failed to do.
Examples
I deeply regret not taking that job opportunity when it was offered to me.
She looked back on her decision with a sense of regret.
If you do not study for the exam, you will surely regret it later.
Synonyms
remorse contrition penitence ruefulness guilt sorrow compunction
Antonyms
satisfaction contentment pride delight joy indifference approval