redouble

verb

Etymology: From Middle French redoubler. By surface analysis, re- + double.

An optional bid made by the side currently holding the highest bid for the contract, after the opposing side has doubled.

Etymology: From Middle French redoubler. By surface analysis, re- + double.

To double, especially to double again; to increase considerably; to multiply; to intensify.
“Having lost sight of our objectives, we redoubled our efforts.”
“Every item of intelligence appeared to redouble the astonishment of the islanders, and they gazed at us with inquiring looks.”
To double an opponent's doubling bid.
To become twice as big.
To double again what was reduced to a single state.
“Like the Conservatives and Labour, the Lib Dems plan to extend Britain's rail network, reopen stations and redouble singled routes.”