one-dimensional
UK: ˌwʌn.daɪˈmen.ʃən.əl | US: ˌwʌn.dɪˈmen.ʃən.əl
adj. having or relating to a single dimension (e.g., length only, without depth or width).
adj. (figuratively) lacking depth or complexity; superficial.
The word combines "one" (Old English "ān," meaning "single") with "dimension" (Latin "dimensio," from "dimetiri," meaning "to measure out"). The suffix "-al" (Latin "-alis") forms adjectives. Originally a mathematical term describing objects measurable in only one direction (e.g., a line), it later gained figurative use to describe simplistic or shallow perspectives.
The artist criticized the film's one-dimensional characters.
A line is a one-dimensional geometric shape.
His analysis was dismissed as one-dimensional and lacking nuance.
In physics, string theory proposes one-dimensional vibrating strings.
The novel's villain felt one-dimensional, with no clear motives.