The crossword solution for the term 'Natural Simplicity' is 'Naivete', which is a 7-letter word. Naivete is defined as a lack of sophistication or experience, often associated with being childlike and trusting. It is often seen as a desirable quality, as it implies innocence and purity. Natural Simplicity is a term that encapsulates this idea, suggesting that the best way to live life is to be open and trusting, without the need for complex solutions.