Bump up Definition 1 of 3Pro Tip 1/3Subtle Intensity Bump up often suggests a small but significant increase. Could you bump up the thermostat a few degrees? Pro Tip 2/3Informal Usage Primarily used in informal settings, like conversations among friends or casual business talk. Let's bump up the budget for our trip. Pro Tip 3/3Impromptu Action Often implies a decision made quickly to adjust to new circumstances. Sales are down; we need to bump up marketing efforts now.