'grammar-agnostic' originates from the combination of 'grammar' and 'agnostic', where 'grammar' refers to the set of rules governing the structure of sentences, and 'agnostic' means 'not committed to a particular belief or course of action'.

The term 'agnostic' was originally used in a religious context to describe someone who believes that nothing is known or can be known of the existence or nature of God. It was later adapted into various fields to denote a lack of commitment to a specific system or belief.

Initially, 'agnostic' meant 'without knowledge', but in the context of 'grammar-agnostic', it evolved to mean 'not restricted by grammar'.