lackluster What is the Definition of lackluster?Adjective:lacking brilliance or vitalitylacking luster or shine Other meanings of lackluster (synonyms, cognates). ENRU lackluster тусклый Frequently viewed: stale definitiondefinition of talentstraightforward meaningdifferent meaningacid meaningdefinition of richelse meaningmyself definitionfaulty meaningreplay meaningword meaningcomment meaning A B C D E F G H I J K L M N O P Q R S T U V W X Y Z