Verse Comparison: Revelation 9:11
American Standard Version
They have over them as king the angel of the abyss: his name in Hebrew is Abaddon, and in the Greek `tongue' he hath the name Apollyon.
Amplified® Bible
Over them as king they have the angel of the Abyss (of the bottomless pit). In Hebrew his name is Abaddon [destruction], but in Greek he is called Apollyon [destroyer].
Darby English Version
They have a king over them, the angel of the abyss: his name in Hebrew, Abaddon, and in Greek he has [for] name Apollyon.
International Standard Version
They had the angel of the bottomless pit ruling over them as king. In Hebrew he is called Abaddon, and in Greek he is called Apollyon.
King James Version
And they had a king over them, which is the angel of the bottomless pit, whose name in the Hebrew tongue is Abaddon, but in the Greek tongue hath his name Apollyon.
Young's Literal Translation
and they have over them a king -- the messenger of the abyss -- a name `is' to him in Hebrew, Abaddon, and in the Greek he hath a name, Apollyon.