Repentance (noun)

1. Feeling or showing remorse for a past wrongdoing or sin.
2. An act of repenting; a change of mind and heart with regard to sin.

Origin:

Late middle english: from old french repentir, from latin repentire "feel remorse", from re- "again" + pentire "to be sorry".

Examples:

1. He showed no repentance for his actions.
2. He asked for forgiveness and promised to do better, expressing genuine repentance.
3. Repentance is a key tenet in many religions.
4. The criminal showed little repentance for his crime.
5. The act of repentance is essential for personal growth and spiritual development.