" carelessly "

1: as in casually, indiscriminately;

•  Synonyms : 

•  arbitrarily,

•  capriciously,

•  casually,

•  indiscriminately,

•  informally,

•  offhand,

•  offhandedly,

•  promiscuously,

•  whimsically,

•  aimlessly,

•  anyhow,

•  anyway,

•  anywise,

•  desultorily,

•  erratically,

•  haphazard,

•  haphazardly,

•  helter-skelter,

•  hit or miss,

•  irregularly,

•  randomly,

•  willy-nilly,

•  accidentally,

•  fortuitously,

•  inadvertently,

•  unconsciously,

•  unintentionally,

•  unwittingly,

•  disconnectedly,

•  disjointedly,

•  fitfully,

•  intermittently,

•  spottily,

•  unpredictably,

•  higgledy-piggledy,

•  topsy-turvy

•  Antonyms : 

•  methodically,

•  systematically,

•  carefully,

•  formally,

•  gingerly,

•  meticulously,

•  orderly,

•  punctiliously,

•  deliberately,

•  intentionally,

•  purposefully,

•  purposely

1: not paying or showing close attention especially for the purpose of avoiding trouble;

  * e.g., " ... a careless reporter who often doesn't get his facts straight "

•  Synonyms : 

•  heedless,

•  incautious,

•  mindless,

•  unguarded,

•  unsafe,

•  unwary

•  Antonyms : 

•  alert,

•  cautious,

•  circumspect,

•  gingerly,

•  guarded,

•  heedful,

•  safe,

•  wary

2: failing to give proper care and attention;

  * e.g., " ... a careless effort that made an unnecessary mess "

•  Synonyms : 

•  derelict,

•  disregardful,

•  lax,

•  lazy,

•  neglectful,

•  neglecting,

•  negligent,

•  remiss,

•  slack

•  Antonyms : 

•  attentive,

•  careful,

•  conscientious,

•  nonnegligent