Jazakallah khair meaning and Significance: Jazakallah Khair and Jazakallah Khairan are arabic words used by muslims to show expressions of gratitude. What is the meaning of jazakallah khair (Arabic: جزاك اللهُ) or should you say Jazakallah Khairan? How to reply to Jazak allah ? Click to learn proper use. Common Mistakes in Using “ JazakAllah Khair ” Many people use “ JazakAllah ” on its own, thinking it’s enough—but this is actually incomplete. Without the word “ Khair ”, the meaning becomes vague. “ JazakAllah ” simply means “May Allah reward you,” but it doesn’t specify what kind of reward. Learn the meaning of Jazakallah Khair and discover appropriate ways to give a Jazakallah Khair reply. Explore Islamic etiquette in expressing gratitude and responding to it.