beef something up

beef up

To increase something, often in strength. With all these protestors here, we definitely need to beef up security. My boyfriend has been going to the gym every day for months in hopes of beefing up his frame. We need to beef up our services in order to rival our competitors' more comprehensive offerings.
See also: beef, up

beef something up

tv. to add strength or substance to something. They beefed up the offer with another thousand dollars.
See also: beef, something, up