" listlessly "

1: as in casually, lazily;

•  Synonyms : 

•  casually,

•  desultorily,

•  halfheartedly,

•  indolently,

•  lackadaisically,

•  languidly,

•  lazily,

•  shiftlessly,

•  sluggishly,

•  spiritlessly,

•  tiredly,

•  wearily

•  Antonyms : 

•  agonizingly,

•  amain,

•  arduously,

•  assiduously,

•  determinedly,

•  diligently,

•  doggedly,

•  hard,

•  hardly,

•  industriously,

•  intensely,

•  intensively,

•  intently,

•  laboriously,

•  mightily,

•  purposefully,

•  resolutely,

•  sedulously,

•  slavishly,

•  strenuously,

•  actively,

•  animatedly,

•  briskly,

•  busily,

•  dynamically,

•  energetically,

•  feverishly,

•  spiritedly,

•  vehemently,

•  vigorously,

•  zealously,

•  continuously,

•  ploddingly,

•  steadfastly,

•  steadily,

•  unabatedly,

•  unrelentingly,

•  unremittingly

1: lacking bodily energy or motivation;

  * e.g., " ... when I had the flu, I felt listless and worn-out "

•  Synonyms : 

•  enervated,

•  lackadaisical,

•  languid,

•  languishing,

•  languorous,

•  limp,

•  spiritless

•  Antonyms : 

•  ambitious,

•  animated,

•  energetic,

•  enterprising,

•  motivated