a statement that something cannot be done: The Pope would not accept a non possumus from the king.
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How to use non possumus in a sentence
Illa qu recitata sunt, vera sunt, sunt pura veritas; non possumus inficiari.History of the Great Reformation, Volume IV | J. H. Merle D'Aubign
He knew the non possumus of Rome too well to believe that in a spiritual crisis she could be moved by the threats of any ruler.Ten Years Near the German Frontier | Maurice Francis Egan
The Austrian Government abandoned its non possumus, and discussed the nature and extent of the compensation alleged to be due.England and Germany | Emile Joseph Dillon
Itaque non modo quod non possumus, sed ne quantum possumus quidem cogimur.Cato Maior de Senectute | Marcus Tullius Cicero
To this absolute-idealistic demand pragmatism simply opposes its non possumus.The Meaning of Truth | William James