The definition of imprudent is a person who lacks judgment.
An example of imprudent is driving while intoxicated.
not prudent; without thought of the consequences; lacking in judgment or caution; rash; indiscreet
Origin of imprudentMiddle English from Classical Latin imprudens: see in- and prudent
Unwise or indiscreet; not prudent.
(comparative more imprudent, superlative most imprudent)