exceptio probat regulam de rebus non exceptis
Latin phrase
ex·cep·tio pro·bat re·gu·lam de re·bus non ex·cep·tis
eks-ˈkep-tē-ˌō-ˌprō-bät-ˈrā-gu̇-ˌläm-dā-ˈrā-ˌbu̇s-ˌnōn-eks-ˈkep-ˌtēs 
: an exception tests the rule as to things not excepted
also
: an exception can demonstrate that the rule exists
Cite this Entry
“Exceptio probat regulam de rebus non exceptis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/exceptio%20probat%20regulam%20de%20rebus%20non%20exceptis. Accessed 31 Oct. 2025.
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