purest
adj.adj. the most clean, perfect, or complete version of something. You use this to describe things that are not mixed with anything else.
adj. the superlative form of 'pure'; describes something entirely unmixed, untainted, or representing the most refined essence of a quality. Often used in abstract contexts to indicate absolute integrity or simplicity.
This is the purest water I have ever tasted.
The scientist needed the purest sample of the element to ensure the experiment's results were accurate.
Her devotion to the cause was seen as the purest form of altruism, as she sought neither recognition nor reward for her lifelong efforts.
Superlative form of 'pure'; typically follows 'the' and precedes the noun it modifies.
the most purestthe purest'Purest' is already a superlative; adding 'most' is a double superlative error.