Chasten often relates to moral improvement through learning from mistakes or hardships. The scammer was chastened by his time spent reflecting in jail.
Pro Tip 2/3
Serious Tone
Using 'chasten' implies a serious situation and is not used lightly or in humor. His flippant attitude towards work was chastened after the serious warning.
Pro Tip 3/3
External Influence
Chastening usually involves an external force, event, or person causing the discipline. The harsh criticism from her peers chastened her behavior.