'uncluttered' originates from the prefix 'un-' meaning 'not' and the word 'clutter,' which comes from Middle English 'clotter,' meaning 'to clot or coagulate.'

'clotter' transformed into the modern English word 'clutter,' and with the addition of the prefix 'un-,' it became 'uncluttered.'

Initially, 'clutter' meant 'to clot or coagulate,' but over time it evolved to mean 'a collection of things lying about in an untidy state.' 'Uncluttered' thus means 'not cluttered.'