ipse dixit

American  

[ip-se dik-sit, ip-see dik-sit] / ˈɪp sɛ ˈdɪk sɪt, ˈɪp si ˈdɪk sɪt /

noun

1. an assertion without proof.

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ipse dixit British  

/ ˈɪpseɪ ˈdɪksɪt /

noun

1. an arbitrary and unsupported assertion

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Etymology

Origin of ipse dixit

< Latin: he himself said it

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Example Sentences

See Examples For:

ipse dixit

Today’s decision reveals California’s considerable wingspan: That case’s ipse dixit now apparently governs all APA challenges to grant-funding determinations that the government asks us to address in the context of an emergency stay application.

From Slate ● Jan. 3, 2026

I was afraid he might push out, because he was, in a way a human dynamo and, at the time of his supremacy, might have controlled 150,000 votes in Indiana by his "ipse dixit!"

From Time Magazine Archive

"Why should one-half of the world be ruled by the ipse dixit of the other?"

From Is He Popenjoy? by Anthony Trollope

Or why should there be any ipse dixit in our poetry, any more than there is in our philosophy?

From Dryden's Works Vol. 3 (of 18) Sir Martin Mar-All; The Tempest; An Evening's Love; Tyrannic Love by John Dryden

“But your ipse dixit does not make it true.”

From Talkers With Illustrations by John Bate

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