- improvident - not provident; not providing for the future
Antonyms: provident, careful, thrifty, farseeing, farsighted, foresighted, foresightful, long, longsighted, forehanded, forethoughtful
- ill-considered, ill-judged, improvident, shortsighted - not given careful consideration; "ill-considered actions often result in disaster"; "an ill-judged attempt"
Antonym: prudent (indirect, via imprudent)