Past Tenses
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Doubtless Antonyms

Trying to find opposite word for doubtless in English? No problem. Our site contains antonyms of doubtless in 9 different contexts. We have listed all the opposite words for doubtless alphabetically.

doubted
  • be apprehensive of
  • be curious
  • be dubious
  • be in a quandary
  • be puzzled
  • be uncertain
  • be undetermined
  • call in question
  • challenge
  • demur
doubtfully
  • ambiguously
  • askance
  • distrustfully
  • doubtingly
  • dubiously
  • hesitatingly
  • irresolutely
  • problematically
  • questionably
  • suspiciously
dubious
  • arguable
  • chancy
  • debatable
  • diffident
  • disputable
  • dubitable
  • equivocal
  • far-fetched
  • fishy
  • fly-by-night
improbably
  • astonishingly
  • extraordinarily
  • implausibly
  • remarkably
indefinite
  • broad
  • confused
  • doubtful
  • dubious
  • equivocal
  • evasive
  • general
  • ill-defined
  • imprecise
  • indeterminable
questionable
  • ambiguous
  • apocryphal
  • arguable
  • contingent
  • controversial
  • controvertible
  • cryptic
  • debatable
  • disputable
  • dubious
questionably
  • uncertainly
  • undecidedly
uncertain
  • ambiguous
  • ambivalent
  • chancy
  • conjectural
  • dubious
  • erratic
  • fitful
  • hanging by a thread
  • hazy
  • hesitant
unlikely
  • absurd
  • contrary
  • doubtful
  • dubious
  • faint
  • implausible
  • improbable
  • inconceivable
  • incredible
  • not likely
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