undisciplined; disorganized; loose
Describes a lack of order, discipline, or systematic arrangement in behavior, groups, or systems. Often used for people, teams, or processes that are not well-regulated.
His way of working is undisciplined, and he always misses deadlines.
無規律な生活を続けていると、健康を害するよ。
If you keep living a disorganized life, you'll damage your health.
Compound of 無 (mu, 'without') and 規律 (kiritsu, 'discipline, order'). The word follows a standard Sino-Japanese negation pattern.