Where does “Исҳоқ” come from?

Исҳоқ (Tajik) comes from Classical Persian اِسْحَاق, from Arabic إِسْحَاق, from Hebrew יצחק — to laugh.

Ancestry of “Исҳоқ”, step by step

StepLanguageWordMeaning
1Classical Persianاِسْحَاق—
2Arabicإِسْحَاق—
3Hebrewיצחקto laugh
Every word from Hebrew יצחק →Every word from Arabic إِسْحَاق →Every word from Classical Persian اِسْحَاق →