'formless'[1]) is one of the many attributes associated to God in Sikhism and means The Formless One.
[3] It finds usage in the Guru Granth Sahib: ਸਚ ਖੰਡਿ ਵਸੈ ਨਿਰੰਕਾਰੁ ॥ सच खंडि वसै निरंकारु ॥ Sacẖ kẖand vasai nirankār.
In the realm of Truth abides the Formless Lord.The words is sometime conjoined with other terms.
Some examples are below: The term was first used to describe the divine by Guru Nanak.
[1] The name later would become the namesake of the Nirankari sect founded by Baba Dayal Singh.