Do 'lacklustre(lackluster)' and 'dull' have the same impression?
*Do 'lacklustre(lackluster)' and 'dull' have a overlapping impression and meaning can be regarded as synonym?

Question

Do 'lacklustre(lackluster)' and 'dull' have the same impression?
*Do 'lacklustre(lackluster)' and 'dull' have a overlapping impression and meaning can be regarded as synonym?

Answer

Yes, dull is a synonym of lackluster..

Answer

Lackluster:

adjective
1. lacking brilliance or radiance; dull: lackluster eyes.
2. lacking liveliness, vitality, spirit, or enthusiasm: a lackluster performance.

Dull:

adjective
1. not sharp; blunt: a dull knife.
2. causing boredom; tedious; uninteresting: a dull sermon.
3. not lively or spirited; listless.