What's the difference between
and
Enter two words to compare and contrast their definitions, origins, and synonyms to better understand how those words are related.

Undoubtedly vs Probably - What's the difference?

undoubtedly | probably |

As adverbs the difference between undoubtedly and probably

is that undoubtedly is without doubt while probably is in all likelihood.

undoubtedly

English

Adverb

(en adverb)
  • Without doubt.
  • * {{quote-book, year=1905, author=
    • , title= , chapter=2 citation , passage=The cane was undoubtedly of foreign make, for it had a solid silver ferrule at one end, which was not English hall–marked.}}

    Synonyms

    * indubitably * unquestionably * doubtlessly * undoubtably

    probably

    English

    Alternative forms

    * (colloquial)

    Adverb

    (en adverb)
  • In all likelihood.
  • *{{quote-book, year=1922, author=(Ben Travers), title=(A Cuckoo in the Nest)
    • , chapter=1 citation , passage=“[…] the awfully hearty sort of Christmas cards that people do send to other people that they don't know at all well. You know. The kind that have mottoes
  • *{{quote-magazine, year=2013, month=May-June, author= William E. Conner
    • , title= An Acoustic Arms Race , volume=101, issue=3, page=206-7, magazine=(American Scientist) , passage=Earless ghost swift moths become “invisible” to echolocating bats by forming mating clusters close

    Synonyms

    * (in all likelihood) likely, perhaps, maybe, possibly, presumably, most likely, doubtless, in all probability, perchance, as likely as not, as like as not

    Statistics

    * English modal adverbs English hedges 1000 English basic words