lacklustre
/ˈlækˌlʌstə(r)/( <美> lackluster)
adjective
1- lacking in vitality, force, or conviction; uninspired or uninspiring缺乏活力的; 缺少信念（或见解）的; 缺少创见的; 令人感到乏味的：
no excuses were made for the team's lacklustre performance.
没有找借口解释球队缺乏活力的表现。
1.1
- (of the hair or the eyes) not shining; dull（头发, 眼睛）无光泽的, 暗淡的。