parsimonious

adjective3

1. •
   Exhibiting parsimony; sparing in the expenditure of money; frugal, possibly to excess.

   • He was regular in his habits, parsimonious, and industrious; but he lacked all talent needed at the bar—he had neither address, nor eloquence, nor ingenuity. — 1838
2. •
   Using a minimal number of assumptions, steps, or conjectures.

   • Statistical methods offer the ability to enforce parsimonious selection of the most influential potential predictors of each gene's state. — 2006
3. •
   Not conceding many goals.