Pronunciation: (un"dur-wûrk'), [key]
—v., -worked, -work•ing.
1. to do less work on than is necessary or required: to underwork an idea.
2. to employ inadequately: He underworks his mind and overworks his feet.
to do less work than is normal or proper: He is fat because he underworks and overeats.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.