irregular🔊

nonstandard; not conforming to rules or expectations

rough {{q|of a surface}}

without symmetry, regularity, or uniformity

(of a polygon) not regular; having sides that are not equal or angles that are not equal

(of a polyhedron) whose faces are not all regular polygons (or are not equally inclined to each other)

(of a word) not following the regular or expected patterns of inflection in a given language

A soldier who is not a member of an official military force and who may not use regular army tactics.

One who does not regularly attend a venue.