There are 2 main definitions of Rex in English:

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Rex 1

Syllabification: Rex

noun

The reigning king (used following a name or in the titles of lawsuits, e.g., Rex v. Jones: the Crown versus Jones).

Origin

Latin, literally 'king'.

Words that rhyme with Rex

annex, convex, ex, flex, hex, perplex, specs, Tex, Tex-Mex, vex

Definition of Rex in:

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There are 2 main definitions of Rex in English:

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Rex 2 Syllabification: Rex

noun

A cat, rabbit, or guinea pig of a breed with very fine short fur.
Example sentences
  • For example a Rex with his silly behavior with a standoffish Russian Blue may not be the right combination.

Origin

1960s: from Latin, literally 'king'.

Definition of Rex in:

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Pronunciation: ˈduːfʌs
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a stupid person