Lacking in vitality, force, or conviction; uninspired or uninspiring.; (of the hair or the eyes) not shining; dull.
‘no excuses were made for the team’s lackluster performance’
‘Real-life DIs are generally lacklustre, dead-pan and dull — if you want proof, watch Crimewatch.’
‘It’s better to have loved and lost than to be in a lacklustre and uninspiring relationship for the rest of your life.’
‘But Japan has been wrestling for more than a decade with falling prices and a lacklustre economic performance.’
‘Sadly, the good vibes wore off very quickly as we became depressed by the gauzy colours, dark underpainting and lackluster watercolours.’
‘The quality of the video is also pretty lackluster, sporting weak black levels and generally dull colors.’
тусклый, без блеска, безжизненный