levelled

Levelled is the past tense and past participle of level in British English, meaning to make something level, even, or flat, or to bring different parts to the same height. It can also function as an adjective describing surfaces or ground that have been made level.

The term derives from the verb level plus the standard past tense ending -ed. In American English, the analogous form is leveled. The word is common in construction, civil engineering, surveying, and landscaping, as well as in metaphorical or figurative uses.

In practical use, levelled describes actions such as preparing a site for concrete by removing high spots and filling low ones, or smoothing and flattening a surface to ensure proper drainage or stability. It is often associated with tools like spirit levels and laser levels used to verify or achieve horizontality. Levelled terrain is essential for foundations, roadbeds, and outdoor layouts, and may also refer to grading activities that adjust slopes for safety and usability. In surveying, levelled measurements help determine elevations relative to a reference point.

The word can also appear in non-literal contexts. For example, it may describe equalizing scores in sports or games, as in levelled scores, where teams reach parity. Across uses, levelled retains the sense of bringing unequal elements to a uniform plane or state, whether physically flattening a surface, balancing elevations, or figuratively harmonizing conditions.