Nirankar (Punjabi: ਨਿਰੰਕਾਰ, niraṅkār from the Sanskrit: ਨਿਰਾਕਾਰਾ/निराकारा nirākārā) means without form or formless and is used in the Guru Granth Sahib.
References
Nirankar Wikipedia(Text) CC BY-SA
Nirankar (Punjabi: ਨਿਰੰਕਾਰ, niraṅkār from the Sanskrit: ਨਿਰਾਕਾਰਾ/निराकारा nirākārā) means without form or formless and is used in the Guru Granth Sahib.