Third-person singular simple present indicative form of retrogress.(verb)
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Use "retrogresses" in a sentence
"These were Mr. Grinnell and an urgent vacation in the Alps. When a man retrogresses to the Stone Age he typically brings three provisions."
"Their campaign retrogresses every single day that they use this strategy."
"That course bogs down, retrogresses or advances in the measure that revolutionary classes and its leaders abide by the laws that rule their destinies."