a fortiori

adverb a for·ti·o·ri \ ˌā-ˌfȯr-shē-ˈȯr-ˌī , ˌä-ˌfȯr-shē-ˈȯr-ē , -ˌfȯr-tē- \

Definition of a fortiori

: with greater reason or more convincing force used in drawing a conclusion that is inferred to be even more certain than another
  • the man of prejudice is, a fortiori, a man of limited mental vision

Did You Know?

A fortiori in Latin literally means "from the stronger (argument)". The term is used when drawing a conclusion that's even more obvious or convincing than the one just drawn. Thus, if teaching English grammar to native speakers is difficult, then, a fortiori, teaching English grammar to nonnative speakers will be even more challenging.

Origin and Etymology of a fortiori

borrowed from Medieval Latin ā fortiōrī, short for ā fortiōrī ratiōne, literally, "from the stronger reason"


Law Dictionary

a fortiori

adverb a for·ti·o·ri \ ˌā-ˌfȯr-shē-ˈōr-ˌī, ˌä-ˌfȯr-shē-ˈōr-ē, -ˌfȯr-tē- \

legal Definition of a fortiori

: all the more certainly : with greater reason : with still more convincing force used in drawing a conclusion that is thought to be even more certain than another
  • the evident purpose of the latter statute — to provide a distinct and more severe sentencing scheme for violent habitual offenders — plainly suggests that the Legislature intended it to apply, a fortiori, to murderers as well as to criminals who commit other violent, but less serious, felonies
  • People v. Jenkins, 893 P.2d 1224 (1995)

Origin and Etymology of a fortiori

New Latin, from the stronger (argument)


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