" uncertainly "

1: as in ineffectually, ineffectively;

•  Synonyms : 

•  impotently,

•  ineffectively,

•  ineffectually,

•  lamely,

•  nervelessly,

•  spinelessly,

•  bloodlessly,

•  halfheartedly,

•  languidly,

•  lazily,

•  listlessly,

•  spiritlessly,

•  delicately,

•  faintly,

•  frailly,

•  shakily,

•  feebly,

•  gently,

•  softly,

•  weakly

•  Antonyms : 

•  dynamically,

•  energetically,

•  explosively,

•  firmly,

•  forcefully,

•  forcibly,

•  hard,

•  mightily,

•  muscularly,

•  powerfully,

•  roundly,

•  stiffly,

•  stoutly,

•  strenuously,

•  strongly,

•  sturdily,

•  vigorously,

•  fiercely,

•  hammer and tongs,

•  robustly,

•  roughshod,

•  sharply,

•  vehemently,

•  violently,

•  actively,

•  animatedly,

•  briskly,

•  crisply,

•  eagerly,

•  gamely,

•  heartily,

•  lustily,

•  snappily,

•  spiritedly,

•  spunkily,

•  vivaciously

1: likely to change frequently, suddenly, or unexpectedly;

  * e.g., " ... the stifling heat would occasionally be relieved by an uncertain breeze "

•  Synonyms : 

•  capricious,

•  changeable,

•  changeful,

•  fickle,

•  flickery,

•  fluctuating,

•  fluid,

•  inconsistent,

•  inconstant,

•  mercurial,

•  mutable,

•  skittish,

•  temperamental,

•  unpredictable,

•  unsettled,

•  unstable,

•  unsteady,

•  variable,

•  volatile

•  Antonyms : 

•  certain,

•  changeless,

•  constant,

•  immutable,

•  invariable,

•  predictable,

•  settled,

•  stable,

•  stationary,

•  steady,

•  unchangeable,

•  unchanging,

•  unvarying

2: not feeling sure about the truth, wisdom, or trustworthiness of someone or something;

  * e.g., " ... never uncertain of her political beliefs or judgment, she was a decisive and fearless leader "

•  Synonyms : 

•  distrustful,

•  doubtful,

•  dubious,

•  hinky,

•  mistrustful,

•  skeptical,

•  suspicious,

•  trustless,

•  unconvinced,

•  undecided,

•  unsettled,

•  unsure

•  Antonyms : 

•  certain,

•  convinced,

•  positive,

•  sure