without symmetry, regularity, or uniformity
rough
not regular; having sides that are not equal or angles that are not equal
whose faces are not all regular polygons (or are not equally inclined to each other)
nonstandard; not conforming to rules or expectations
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.
Of or relating to the grammatical aspect which presupposes the completion of a secondary action as a premise for the primary action of the statement.
Of, or relating to a succession; hereditary.
Coming one after the other in a series.