Regressive (adjective)

1. Relating to or characterized by regression; tending to move backwards.
2. Relating to or characterized by a return to an earlier stage of development.
3. Relating to or characterized by a worse condition or state.

Origin:

From the word regress, which comes from the latin regredi, meaning to return or go back.

Examples:

1. The patient's regressive behavior was a concern for the therapist.
2. The economy's regressive trend was a cause for worry.
3. The team's regressive performance in the second half of the season was unexpected.
4. The regressive law was repealed after public protest.
5. The regressive tax system was considered unfair by many.