step up
noun(step-up)
an increase or advance in size or amount
step up
verb(step-up)
to increase (a voltage) by means of a transformer
step up
verb(step-up)
to increase, augment, or advance especially by one or more steps
step up
verb(step-up)
to come forward
step up
idiom(step-up)
more/less important, challenging, etc., than something had before
step up
idiom(step-up)
to go faster
step up
idiom(step-up)
—used to invite people to gather around to see a show or to buy things
step up
idiom(step-up)
to move into position next to home plate in order to bat —often used figuratively in U.S. English