progressive

a tense of verbs used in describing action that is on-going

a person who favors a political philosophy of progress and reform and the protection of civil liberties

favoring or promoting progress; "progressive schools"

favoring or promoting reform (often by government action)

(of taxes) adjusted so that the rate increases as the amount of income increases

gradually advancing in extent

(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"

advancing in severity; "progressive paralysis"