ramp up /ˌɹæmp ˈʌp/verb 4ramp-up noun 1forms 4 verb4 •To increase rapidly to a new value.Headcount ramped up over three months. •To increase (something) rapidly to a new value; to cause (something) to ramp up.The manager ramped up headcount. •To start up; to be in an initial phase of rapid increase.The 5G development project will ramp up in the first quarter. •To start (something) up; to cause (something) to ramp up.He wants to be first to ramp up his project. ramp-up noun1 •A sudden increase; a boost. formsramped up · ramping up · ramps up · ramp-ups