parsimonious

Excessively sparing or frugal.

Characterized by parsimony in practice or disposition; very sparing in expenditure; frugal to excess; stinting; niggardly.

Synonyms Miserly, Niggardly, etc. See penurious.

Exhibiting parsimony; sparing in expenditure of money; frugal to excess; penurious; niggardly; stingy.

Using a minimal number of assumptions, steps, or conjectures.