Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
inarguably is an adverb meaning "in an unarguable and undisputed manner". It carries one recorded sense.
in an unarguable and undisputed manner
“you write as if this fact whilst inarguably forever condemning me to the ranks of Bohemianism nevertheless earned for me the right of entry into any company”
Definitions, synonyms and semantic relations for inarguably come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.