effecting an increase.

Electricity . serving to increase voltage

a step-up transformer.

(of a lease) allowing for gradual rent increases to the highest amount permissible.

an increase or rise in the rate or quantity of something.

verb

decelerate , halt , hinder , slow

verb

augment , boost , escalate , hasten , hurry , improve , increase , intensify , lift , quicken , raise , shake up , speed , speed up , up , step