Nouns

(n)progressive, progressive tense, imperfect, imperfect tense, continuous tensea tense of verbs used in describing action that is on-going
(n)liberal, liberalist, progressivea person who favors a political philosophy of progress and reform and the protection of civil liberties

Adjectives

(a)progressivefavoring or promoting progress“progressive schools”
(a)progressive(of taxes) adjusted so that the rate increases as the amount of income increases
(s)progressive, reformist, reform-mindedfavoring or promoting reform (often by government action)
(s)progressivegradually advancing in extent
(s)progressive(of a card game or a dance) involving a series of sections for which the participants successively change place or relative position“progressive euchre”, “progressive tournaments”
(s)progressiveadvancing in severity“progressive paralysis”