Waheguru is the Guru Mantra or primary Mantra. It is the reference to the Almighty God; the Creator; the Supreme Soul; the Sustainer. The word ‘Waheguru’ literally means the “Wonderful Lord” in the Gurmukhi language.God has many names in Sikhism and Waheguru is probably the most important and the most common.Other words for God are: ‘Satnaam’ which breaks down into ‘Sat’ meaning True and ‘Nam’ meaning Name. So ‘Satnaam’ or ‘Satnam’ means True Name. Other popular names for God are: ‘OnKar’, ‘Nir-vair’, ‘Akaal-moorat’, Gobind, Hari, Ram, Pritam, etc