Lackluster may describe things that are dull, but the word itself is no yawn. In its earliest uses in the early 17th century, lackluster (also spelled lacklustre) usually described eyes that were dull or lacking …

LACKLUSTER definition: lacking lack brilliance or radiance; dull. See examples of lackluster used in a sentence.

Add to word list lacking energy and effort: a lackluster performance (Definition of lackluster from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of lackluster adjective in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Oct 11, 2025 · lackluster (countable and uncountable, plural lacklusters) (American spelling) (uncountable) Lack of brightness or points of interest. (countable) A person or thing of no particular …

1. lacking brilliance or radiance; dull: lackluster eyes. 2. lacking liveliness or vitality: a lackluster performance. n. 3. a lack of brilliance or vitality. Also, esp. Brit.,lack′lus`tre.

WordReference Random House Unabridged Dictionary of American English © 2024 lack•lus•ter (lak′ lus′tər), adj. lacking brilliance or radiance; dull: lackluster eyes. lacking liveliness, vitality, spirit, or …

If you describe something or someone as lackluster, you mean that they are not exciting or energetic. He has already been blamed for his party's lackluster performance during the election campaign.

Lackluster is a compound adjective that means what it sounds like: if something is lackluster it lacks luster; in other words, it is without brilliance, shine, or vitality. Think dull. Shakespeare gave us the …

Britannica Dictionary definition of LACKLUSTER [more lackluster; most lackluster] : lacking excitement or interest a lackluster [= dull, mediocre] performance