How to Write Lacklustre?

lacking liveliness, vitality, spirit, or enthusiasm: a lackluster performance. a lack of brilliance or vitality. Also especially British, lack·lus·tre .

Is it lackluster or Lacklustre?

As adjectives the difference between lacklustre and lackluster. is that lacklustre is (british) while lackluster is lacking brilliance or intelligence.

How do you use Lacklustre in a sentence?

We shall have a lacklustre campaign because it will have no national backing. I am just saying that this document is lacklustre. This has been a very lacklustre debate about a proposal over which no one can get very excited. Their track record, however well-meaning, has been rather lacklustre.