work up

verbs

form or accumulate steadily

"Resistance to the manager's plan built up quickly"; "Pressure is building up at the Indian-Pakistani border"

build, build up, progress, work up

develop

"we worked up an as of an appetite"

get up, work up

bolster or strengthen

"We worked up courage"; "build up confidence"; "ramp up security in the airports"

build, build up, ramp up, work up

come up with

"His colleagues worked out his interesting idea"; "We worked up an ad for our client"

work out, work up