work up

work up (http://definr.com/work up)

     v 1: form steadily; "Resistance to the manager's plan built up
          quickly" [syn: build up, build, progress]
     2: develop, as of an appetite [syn: get up]
     3: increase or strengthen gradually; "This investment is
        building interest"; "We worked up courage" [syn: build up,
         build]
     4: come up with; "We evolved an interesting idea"; "We worked
        up an ad for our client" [syn: evolve, work out]