Definition of downshift:
(n) :
A change in career or lifestyle to one which is not as well paid but less stressful and more personally rewarding.
(n) :
(automotive, cycling) A shift of a transmission into a lower gear, as dictated by heavier load on the engine, as for example when climbing a hill or strongly accelerating.
(v) :
(transitive) (automotive, cycling) To shift (a car or bicycle) into a lower gear.
(v) :
(transitive) To reduce (something) in quality or quantity (as effect, scope, speed, etc.)
(v) :
(transitive) To change (one's career or lifestyle) to one which is not as well paid but less stressful and more personally rewarding.
(n) :
A reduction in quality or quantity.