IPA: /ɪnˈdʒuːdɪʃəsli/
KK: /ɪnˈdʒuːdɪʃəsli/
In a way that shows a lack of good judgment or wisdom.
He injudiciously invested all his savings in a risky venture.
Injudiciously → It is formed from "in-" (meaning not) and "judicious" (from Latin "judicium", meaning judgment). The suffix "-ly" (meaning in a manner) indicates the manner of the action. Thus, "injudiciously" means acting in a manner that is not wise or lacking good judgment.
Think of 'not' ('in-') being combined with 'judgment' ('judicious') to remember that 'injudiciously' means acting without good judgment.