Table of Contents POS
HYPHEN
COUNT IN NET
WORDNET DICTIONARY
THESAURUS

WORDNET DICTIONARY

Adverbial undoubtedly has 1 sense

• undoubtedly(r = adv.all) doubtless, doubtlessly - without doubt; certainly; "it's undoubtedly very beautiful"

THESAURUS

undoubtedly

actually, admittedly, assuredly, beyond doubt, beyond question, certainly, clearly, definitely, doubtless, doubtlessly, easily, explicitly, factually, forsooth, historically, in fact, in reality, in truth, in very sooth, incontestably, indeed, indeedy, indisputably, indubitably, irrefragably, irrefutably, no doubt, nothing else but, obviously, of a truth, out of question, really, really-truly, surely, truly, undeniably, unmistakably, unquestionably, verily, veritably, with truth, without doubt

For further exploring for "undoubtedly" in Webster Dictionary Online