From Coptic ⲁⲙⲟⲩⲛ (amoun), from Egyptian jmn (“the god Amun”). The variant forms Ammon and Amon are from Ancient Greek Ἄμμων (Ámmōn), from the same Egyptian source. The variant Amen is from Ȧmen, Lepsius’s obsolete 19th century transcription of the original Egyptian word.