Elementariness refers to something that is basic, fundamental, or elementary in nature. Synonyms for this word include simplicity, fundamentalism, plainness, and rudimentary. Simplicity implies a lack of complexity or complication, while fundamentalism suggests adherence to basic principles. Plainness denotes an absence of adornment or embellishment, and rudimentary denotes something that is basic or initial. Other synonyms for elementariness include basicity, primitiveness, unadornedness, and unpretentiousness. These words all convey the idea of something being basic or fundamental without any additional complexities or embellishments. Overall, these synonyms help to convey the idea of something being simple and essential.