"stingier" in the adjective sense
1. stingy, ungenerous
unwilling to spend (money, time, resources, etc.
"she practices economy without being stingy"
"an ungenerous response to the appeal for funds"
2. meager, meagre, meagerly, stingy, scrimpy
deficient in amount or quality or extent
Source: WordNet® (An amazing lexical database of English)
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