What is progressive as an adjective?

Progressive is an adjective, based on the verb progress (to move forward). Progressive means forward-moving, gradual, or aimed at improvement.

progressive 作为形容词，表示积极向前发展、进步的，支持变革和进步的，或者是逐渐增加的。例如：progressive policies（进步的政策），progressive taxation（累进税制），progressive thinking（进步的思想）。