An example of one-dimensional is a woman who will only date wealthy men.
A straight line is one-dimensional.
They're very one-dimensional lyrics that have little depth or imagination.
Tests may be too narrow or one-dimensional.
Despite one particularly gruesome bout of violence that we see in episode 3, Harry is more than a purely one-dimensional villain.
There's not a lot to delve into here, it's a one-dimensional Cab that won't stand out in a crowd, but it can be appreciated for its price performance value ratio.