- The definition of lackluster is something lacking energy or excitement, or lacking in shine or vibrancy.
- A dull and boring party is an example of something that would be described as a lackluster event.
- A half-hearted and uncaring effort is an example of something that would be described as a lackluster effort.
A couple at a lackluster party.
- lacking brightness; dull: lackluster eyes
- lacking energy or vitality; boring, unimaginative, etc.: a lackluster performance
Rare absence of brightness; dullness
Also Chiefly Brit.lacklustre
Lacking brightness, luster, or vitality; dull. See Synonyms at dull.
(comparative more lackluster, superlative most lackluster)