From Middle French, from Late Latin promptitudo, from Latin promptus.
promptitude (usually uncountable, plural promptitudes)
- The quality of being prompt; alacrity.
- 1924, Herman Melville, Billy Budd, London: Constable & Co., Chapter 18, 
- Small wonder then that the Indomitable's Captain, though in general a man of rapid decision, felt that circumspectness not less than promptitude was necessary.
Borrowed from Late Latin promptitūdo.
promptitude f (uncountable)