[n] the act of increasing something; "he gave me an increase in salary"
[v] increase in extent or intensity; "The Allies escalated the bombing"
[v] speed up; "let's rev up production"
[v] make oneself visible; take action; "Young people should step to the fore and help their peers"
accrual, accruement, accumulation, act, addition, advance, aggrandisement, aggrandizement, amplification, appreciation, augmentation, change of magnitude, elevation, enlargement, escalation, exaggeration, expanding upon, expansion, inclusion, increase, intensification, maximation, maximisation, maximization, move, redouble, rise, split, split up, stock split, strengthening, surge, upsurge
\Step"-up`\, a. (Elec.) Transforming or converting a low-pressure current into one of high pressure; as, a step-up transformer.