verb-intransitive. To shift a motor vehicle into a lower gear.verb-intransitive. To reduce the speed, rate, or intensity of something.verb-intransitive. To simplify or reduce one's expectations or commitments, especially in work hours: "28 percent said that they had downshifted and voluntarily cut back on their income in some way ... to reflect changes in priorities” ( Carey Goldberg). v. To shift (a motor vehicle) into a lower gear.v. To reduce in speed, rate, or intensity: "The president is downshifting his confrontational rhetoric and reaffirming his readiness to talk arms control” ( Newsweek). v. To simplify or reduce one's commitments in (one's life).