Nonsubstantial

Nonsubstantial is an English adjective used to describe something that lacks substance in a physical, logical, or practical sense. It can refer to objects that are thin, light, or insubstantial, as well as to ideas, arguments, or claims that do not have convincing support or significance. The term often conveys a sense of being unreal or insubstantial rather than merely small or unimportant.

Etymology: The word is formed by adding the negating prefix non- to substantial, which itself derives from the Latin substantus meaning "standing under" or "standing as substance" via Old French substant and Middle English. The form nonsubstantial has appeared in English since the early modern period, though alternatives such as insubstantial are more common in contemporary usage.

Usage: Nonsubstantial is less common than insubstantial or unsubstantial, and it tends to appear in formal or literary prose. It is used to emphasize a lack of real substance rather than simply a lack of size or importance. For example, a scholarly article might be criticized for offering nonsubstantial evidence for its conclusions. In physical descriptions, it can describe things that have little mass or firmness, such as a nonsubstantial layer of fog or a fabric that lacks heft.

See also: insubstantial; unsubstantial; substance; substantial.