Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun regicide

2 senses of regicide

Sense 1
regicide -- (someone who commits regicide; the killer of a king)
       => killer, slayer -- (someone who causes the death of a person or animal)

Sense 2
regicide -- (the act of killing a king)
       => murder, slaying, execution -- (unlawful premeditated killing of a human being by a human being)