the killing of a king.
a person who kills a king or is responsible for his death, especially one of the judges who condemned Charles I of England to death.
Origin of regicide
1540–50;Related formsreg·i·cid·al, adjective
< Latin rēg-,
stem of rēx
king + -i-
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for regicidal
Historical Examples of regicidal
This prince, when his unfortunate father fell into the hands of the regicidal party, found a loyal welcome in Jersey.
Thus, between me and the eye-witness of the regicidal catastrophe, only one person intervenes.
He had especially agreed with me in deprecating the cruelty of the regicidal sentence.
The three criminal thrones, and the regicidal republic, were alike to be punished.
The king, for the fourth time, was brought before the remnant of the regicidal junta.
British Dictionary definitions for regicidal
Derived Formsregicidal, adjective
the killing of a king
a person who kills a king
Word Origin for regicide
C16: from Latin rēx king + -cide
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for regicidal
1540s, "man who kills a king," formed from Latin rex (genitive regis) "king" (see regal) on model of suicide. Meaning "crime of killing a king" is from c.1600.
Online Etymology Dictionary, © 2010 Douglas Harper