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 …

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

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

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 …

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

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, …

1. lacking brilliance or radiance; dull: lackluster eyes. 2. lacking liveliness or vitality: a lackluster performance. n. 3. a lack of brilliance or vitality.

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 …

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

Dull, uninspiring, or lacking in vitality or brilliance. "The team's lackluster performance resulted in a disappointing loss." It denotes a lack of enthusiasm, energy, or effectiveness in a particular …