IPA: /ɪmˈprɒvɪdənt/
KK: /ɪmˈprɒvɪdənt/
Not careful about saving money or planning for the future; often spending too much or acting without thinking ahead.
His improvident spending habits led him to financial trouble.
Improvident is formed from "im-" (meaning not) and "provident" (from Latin "providens", meaning foreseeing or preparing). The word describes someone who does not foresee or prepare for the future, indicating a lack of foresight or planning.
Think of someone who is 'not' ('im-') 'foreseeing' ('provident') their future — that's why improvident means lacking foresight.