1. Form or accumulate steadily
   - build up, build, progress 
2. Develop
   "we worked up an as of an appetite"
   - get up 
3. Bolster or strengthen
   "We worked up courage"
   - build up, build, ramp up 
4. Come up with
   "We worked up an ad for our client"
   - work out

Derived forms: working up, works up, worked up

Type of: acquire, develop, get, grow, increase, make grow, produce

• panting
• pantisocracy
• panto
• pantograph
• pantomime
• pantomimer
• pantomimist
• pantothen
• pantothenic acid
• Pantotheria
• pantropic
• pantropical
• pantry
• pantryman
• pants
• pants presser
• pants suit
• pantsuit
• panty
• panty girdle
• pantyhose
• pantywaist
• panzer
• Paola Caliari
• Paolo Veronese