IPA: /ɪmˈprɒvɪdəntli/
KK: /ɪmˈprɒvɪdəntli/
In a way that shows a lack of foresight or care for the future, often leading to wastefulness or poor planning.
He spent his money improvidently, buying things he didn't need.
Improvidently → It is formed from "im-" (meaning not) and "provident" (from Latin "providens", meaning foreseeing or preparing) and the suffix "-ly" (meaning in a manner). The word "improvidently" means in a manner that is not foreseeing or preparing, often implying carelessness or lack of foresight.
Think of 'not preparing' ('im-' means not and 'provident' means foreseeing) to remember that 'improvidently' describes acting without foresight.