What is the meaning of SUNK COST?

SUNK COST is the cost expended that cannot be retrieved on a product or service.

Barry Goldsmith
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APABarry Goldsmith. (2010). sunk cost. Retrieved September 30, 2026, from http://smartdefine.org/sunk_cost/definitions/1164552
ChicagoBarry Goldsmith. 2010. "sunk cost" http://smartdefine.org/sunk_cost/definitions/1164552 (accessed September 30, 2026).
HarvardBarry Goldsmith 2010, sunk cost, Smart Define, viewed 30 September, 2026, <http://smartdefine.org/sunk_cost/definitions/1164552>.
MLABarry Goldsmith. "sunk cost" 21 October 2010. Web. 30 September 2026. <http://smartdefine.org/sunk_cost/definitions/1164552>