Improvident
Improvident , adjective
[Prefix im- not + provident: compare Latin improvidus. See Provident, and compare Imprudent.]
Not provident; wanting foresight or forethought; not foreseeing or providing for the future; negligent; thoughtless; as, an improvident man.
Improvident soldiers! had your watch been good,
This sudden mischief never could have fallen.