low-ball definition by American Heritage Dictionary
or low·balltransitive verb low-balled or low·balled, low-bal·ling or low·bal·ling, low-balls or low·balls Slang
To underestimate or understate (a cost) deliberately: “He often took illegal cash payments from developers in return for . . . low-balling the cost of construction and renovation work” (Boston Globe).
Origin: From the card game of the same name.
- lowˈ-ball adjective