Keránnymi (κεράννυμι) means to mix, to mingle — particularly mixing wine with water or spices. In Revelation, it describes divine judgment.
Revelation 14:10: those who receive the mark 'will drink the wine of God's fury, poured full strength into the cup of his wrath.' The Greek is striking: wine 'mixed' yet 'unmixed' (akratos) — meaning undiluted, full strength. A deliberate paradox emphasizing unmitigated divine wrath. In 18:6, Babylon receives 'a double portion from her own cup.' This draws on Psalm 75:8. The cup of wrath is the counterpart to the cup of blessing (1 Corinthians 10:16) that Christ offered — He drank the cup of wrath so we might drink the cup of salvation.