1. to return to a former or less developed state
2. to go back to an earlier point in time or development

1. the act of returning to a former state or condition

Examples

• The patient began to regress after stopping treatment.
• Under stress, he tends to regress to childish behavior.
• The country’s economy started to regress during the crisis.
• Her language skills seemed to regress over the summer break.
• The therapy helped prevent any regress in his recovery.
• Scientists observed a regress in the species’ population.
• The team’s performance showed a clear regress this season.