'Granth' originates from the Sanskrit language, specifically the word 'ग्रन्थ' (grantha), where 'grantha' meant 'book' or 'treatise'.

'ग्रन्थ' (grantha) transformed into the Punjabi word 'ਗ੍ਰੰਥ' (granth), and eventually became the modern English word 'Granth' through transliteration.

Initially, it meant 'book' or 'treatise', but over time it evolved into its current meaning of 'sacred scripture' in the context of Sikhism.