English Antonyms Practice Test 1

Retardation : delay or hold back in terms of progress or development.
Retrogression : the process of returning to an earlier state, typically a worse one
Transgression : an act that goes against a law, rule, or code of conduct; an offence
Progress : Development
Impunity : exemption from punishment or freedom from the injurious consequences of an action.

Correct option is Retrogression.