Answer: ivaniv

AnswerCrossword Clue
IVANIV

First Russian tsar

IVANIV

"The Terrible" tsar

IVANIV

Czar nicknamed "the Terrible"

IVANIV
First tsar of Russia
IVANIV
Despot called "the Terrible"
IVANIV"Terrible" ruler
IVANIV"The Terrible" czar
IVANIVA k a the Terrible
IVANIV"Terrible" czar
IVANIVFirst monarch to be crowned Tsar of All Russia
IVANIVCzar known for his mental instability