doubtless
adverb
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Divide doubtless into syllables:

doubt · less

How to pronounce doubtless:

Definition of doubtless:

doubtless (adverb):
without doubt
without doubt; certainly.
probably or almost certainly

Synonyms for doubtless:

most likely
presumably
probably
undoubtedly

Antonyms for doubtless:

ambiguously
askance
askant
distrustfully
doubted
doubtfully
doubtingly
dubious
dubiously
falsely
fraudulently
hesitantly
hesitatingly
improbably
inaccurately
incorrectly
indefinite
indefinitely
indistinctly
irresolutely
mistakenly
mistrustfully
obscurely
possibly
questionable
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