Stingy

google

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mid 17th century: perhaps a dialect variant of the noun sting + -y1.

wiktionary

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Uncertain, possibly from stinge, a dialectal variation of sting(verb).

sting +‎  -y

etymonline

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stingy (adj.)

"niggardly, penurious, extremely tight-fisted," 1650s, of uncertain origin, perhaps a dialectal alteration of earlier stingy "biting, sharp, stinging" (1610s), from sting (v.). Back-formation stinge "a stingy person" is recorded from 1905. Related: Stingily; stinginess.