The lackluster attendance surprised the organizers, who had assumed that a free lecture would fill the hall.
出席人数平平令主办方意外，他们本以为免费讲座会坐满会场。
Which choice best defines “lackluster”?
A — Lacking brilliance or vitality; dull.. “lackluster” means Lacking brilliance or vitality; dull..
Which word means “Lacking brilliance or vitality; dull.”?
B — lackluster. “lackluster” means Lacking brilliance or vitality; dull..
lackluster — Lacking brilliance or vitality; dull.. In Chinese: 平淡的;缺乏活力的;暗淡的.
lackluster is pronounced //ˈlæklʌstər//.
The lackluster attendance surprised the organizers, who had assumed that a free lecture would fill the hall. (出席人数平平令主办方意外，他们本以为免费讲座会坐满会场。)
dull, uninspired, insipid — all close in meaning to lackluster (Lacking brilliance or vitality; dull.).
brilliant, vibrant — each the opposite of lackluster (Lacking brilliance or vitality; dull.).
Yes. lackluster is on the SAT Prep Difficult list — the higher-register words that decide the hard questions. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.
lack(缺) + luster(光泽) → 没有光彩 → 平淡无奇。