One who, or that which, conserves.
Advancing in severity.
Of or relating to progressive education.
Favouring or promoting progress; advanced.
Liberal.
Continuous.
Promoting or favoring progress towards improved conditions or new policies, ideas, or methods.
Increasing in rate as the taxable amount increases.
Gradually advancing in extent; increasing.
A progressive verb; a verb used in the progressive tense and (in English) generally conjugated to end in -ing.
A person who actively favors or strives for progress towards improved conditions, as in society or government.