a political movement/party

Of Reform Judaism, its tenets, or its adherents.

The change of something that is defective, broken, inefficient or otherwise negative, in order to correct or improve it

(transitive) To put into a new and improved form or condition; to restore to a former good state, or bring from bad to good; to change from worse to better.

(intransitive) To return to a good state; to amend or correct one's own character or habits.

(transitive, intransitive) To form again or in a new configuration.