a fortiori

American  

[ah fohr-ti-oh-ree, ey fawr-shee-awr-ahy, ey fohr-shee-ohr-ahy] / ɑ ˌfoʊr tɪˈoʊ ri, eɪ ˌfɔr ʃiˈɔr aɪ, eɪ ˌfoʊr ʃiˈoʊr aɪ /

adverb

Latin.

1. for a still stronger reason; even more certain; all the more.

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a fortiori British  

/ -rɪ, eɪ ˌfɔːtɪˈɔːraɪ, ɑː /

adverb

1. for similar but more convincing reasons

   if Britain cannot afford a space programme, then, a fortiori, neither can India

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Etymology

Origin of a fortiori

Latin

Example Sentences

See Examples For:

a fortiori

"That said... that does not mean that the individuals who were targeted, and a fortiori the person who died, were themselves involved in trafficking. I want to be absolutely clear on that".

From BBC ● May 15, 2026

For, after all, is it not by now conceded that, a fortiori, if marzeydoats and doazey-doats then the invariable corallary is habeas corpus mandamus potatus?

From Time Magazine Archive

The care of God for man is generally argued, a fortiori, from His care for inferior creatures.

From Conversion of a High Priest into a Christian Worker by Golden, M. (Meletios)

If you ask me how she managed it I can’t tell you; it’s no business of mine, and a fortiori none of yours. 

From Lady Barbarina The Siege of London, An International Episode and Other Tales by James, Henry

That they were Kelts rather than Germans is the commonest doctrine, and that they were Britons rather than Gaels is a common one; the arguments that prove the latter proving the first a fortiori.

From The Ethnology of the British Islands by Latham, R. G. (Robert Gordon)