Synonyms for Pessimistically:

• adv.

  •hopelessly (adverb)
  • despairingly,
  • downheartedly,
  • dejectedly,
  • forlornly,
  • melancholically,
  • dismally,
  • miserably,
  • cheerlessly,
  • morosely,
  • bleakly,
  • darkly,
  • desperately,
  • glumly,
  • despondently,
  • gloomily,
  • cynically,
  • spiritlessly,
  • sadly.

• Other synonyms:

  •Other relevant words:
  • depressingly,
  • fatalistically,
  • low,
  • Bluely,
  • uncertainly,
  • negatively,
  • unhappily,
  • distrustfully,
  • dimly,
  • harmfully,
  • sullenly,
  • doubtfully,
  • disapprovingly,
  • dolefully,
  • misanthropically,
  • unhelpfully,
  • seriously,
  • unhopefully,
  • unenthusiastically,
  • drearily,
  • morbidly,
  • moodily,
  • inconsolably.

Antonyms for Pessimistically:

• adv.

  • all
    optimistically.
  • hopelessly
    expectantly, hopefully, confidently.