The phrase "is natural" refers to something that occurs or exists in accordance with the laws of nature. Synonyms for this phrase include "is inherent," "is innate," "follows nature," "is normal," and "is expected." Other synonyms for "is natural" may include "is unforced," "comes naturally," "is instinctive," "is spontaneous," "is organic," or "is intrinsic." The use of synonyms can help to clarify meaning and add variety to language, making communication more effective and engaging. By utilizing a diverse range of synonyms, writers can convey their ideas with greater precision and nuance, appealing to a wider range of readers.