boxy
Shaped like a box, with flat sides and sharp corners.
Boxy describes something shaped like a box: square, angular, and lacking smooth curves or rounded edges. A boxy car has a flat roof, straight sides, and sharp corners rather than the sleek, curved design of a sports car. Old computer monitors were boxy compared to today's thin, curved screens.
The word often suggests something practical but not particularly graceful. A boxy building might be efficient to construct but plain to look at. Boxy clothing hangs straight down without following the shape of your body, like an oversized T-shirt that falls in a square shape rather than fitting close.
Sometimes designers deliberately create boxy shapes for style or function. Jeeps have a boxy design that looks rugged and tough. Minecraft's entire world is famously boxy, with everything built from cubes. A boxy cardboard fort might not win any beauty contests, but it gets the job done.
The word isn't always negative, just descriptive. Whether something boxy is good or bad depends on what you need: a boxy room is easier to arrange furniture in than an oddly shaped one, but a boxy jacket might not be as flattering as one that's more fitted.