IPA: /ɪnˈdʒuːdɪʃnəs/
KK: /ɪnˈdʒuːdɪʃnəs/
The quality of making poor or unwise decisions.
His injudiciousness in spending money led to financial troubles.
Injudiciousness → It is formed from "in-" (meaning not) and "judicious" (from Latin "judicium", meaning judgment or discernment) and the suffix "-ness" (meaning the state of being). The word refers to the state of lacking good judgment or discernment.
Think of 'not' ('in-') having 'good judgment' ('judicious') — that's why injudiciousness means the state of lacking good judgment.