The antonyms for the word "be level" can be varied, depending on the context. However, some of the opposing words for "be level" include "slope," "incline," "slant," and "tilt." These words suggest that something is not flat or even, but rather inclined or slanted in a particular direction. Other antonyms for "be level" may include "uneven," "irregular," "wavy," "crooked," or "bumpy," which point to an object's lack of smoothness, regularity, or uniformity. Understanding the antonyms for "be level" is essential when describing the surface or structure of an object, especially in construction, landscaping, or design.