na-adjective
Describes a person who is careless or undisciplined, especially with time, money, or promises. Often used as ルーズな or ルーズに.
from English loose
彼は時間にルーズで、いつも遅刻する。
He is careless with time and always arrives late.
People who are lax with money can't be trusted.
na-adjective
Used for clothing that is loose or relaxed in fit. Often appears in compound terms like ルーズソックス.
See also: ルーズソックス
このパンツはルーズなシルエットが特徴です。
These pants feature a loose-fitting silhouette.
na-adjective
Describes a relaxed atmosphere, rhythm, or style, such as in music or a social setting.
このカフェはルーズな雰囲気で、長居したくなる。
This café has a laid-back atmosphere that makes you want to stay a while.