1. 无光泽的：puny 小的,弱的,微不足道的 | lacklustre 无光泽的 | capitalize 以大写字母写,变成资本

2. 死气沉沉的,无生气的：muted 减弱的,缓和的 | lacklustre 死气沉沉的,无生气的 | curtail 限制,缩短

3. 无光泽的,呆滞的：Eat out of house and home: 吃穷 | Lacklustre: 无光泽的,呆滞的 | The course of true love never did run smooth: 爱情之路,崎岖不平.

4. 无光泽的/无生气的/无光泽/无生气：lackluster /无光泽的/无神的/ | lacklustre /无光泽的/无生气的/无光泽/无生气/ | lacmus /石蕊/

adj

1. lacking luster or shine

e.g. staring with lackluster eyes
lusterless hair

Synonym: lacklusterlusterlesslustreless

2. lacking brilliance or vitality

e.g. a dull lackluster life
a lusterless performance

Synonym: lacklusterlusterlesslustreless