時間にルーズ
彼は時間にルーズだから、待ち合わせに遅れることが多い。
He's unpunctual, so he's often late for appointments.
Not keeping to agreed or expected times; habitually late.
時間にルーズな人は、仕事でも信頼されにくい。
Unpunctual people are less likely to be trusted at work.
約束の時間に30分も遅れてくるなんて、時間にルーズすぎる。
Coming 30 minutes late to an appointment is way too unpunctual.
Often used to describe a person's character trait rather than a single instance.
Pro Tip
Polite alternatives
To soften criticism, you can say 「時間に少しルーズなところがある」 (has a slight tendency to be unpunctual) instead of directly calling someone 時間にルーズ.
Word Origin
From 時間 (jikan, 'time') + ルーズ (rūzu, loanword from English 'loose', meaning 'not strict' or 'slack'). The phrase emerged in Japanese around the mid-20th century as a direct translation of the English concept.
Usage Notes
Commonly used in personal and professional contexts to criticize someone's lack of punctuality. Often implies a negative judgment on the person's reliability.