adverb

irréfragablement

/i.ʁe.fʁa.ɡa.blə.mɑ̃/

adverb/i.ʁe.fʁa.ɡa.blə.mɑ̃/

irrefragably

Synonyms: irréfutablement

From irréfragable + -ment.

irréfragablement — French Dictionary | Passage