one-dimensional

Definitions

1. Having length, but no width, height or depth.
   not-comparable, usually
2. Lacking depth or believability; flat.
   figuratively, not-comparable, usually
3. Lacking personal depth and substance; conceited, vain, shallow, superficial.
   figuratively, not-comparable, usually

Equivalents

Examples

“A straight line is one-dimensional.”

“one-dimensional characters”

“Such one-dimensional characters have⟳ always existed in the theatre along with more recognizably human characters.”

“In contrast to this are the flat, one-dimensional characters found in fables.”

CEFR level