IPA: /ɪmˈpruːdəntli/
KK: /ɪmˈpruːdəntli/
In a way that shows a lack of careful judgment or thought.
He spent his money imprudently, buying things he didn't need.
Imprudently → It is formed from "im-" (meaning not) and "prudent" (from Latin "prudentem", meaning wise or careful) and the suffix "-ly" (meaning in a manner). The word "imprudently" means in a manner that is not wise or careful.
Think of 'not wise' ('im-') and 'careful' ('prudent') to remember that 'imprudently' means acting without wisdom or caution.