(a.) Having different shapes or forms.

capricious changeable changing choppy deviating deviative deviatory different disorderly divaricate divergent diversified diversiform erose erratic impulsive inconsistent inconstant irregular jagged jerky mercurial motley mutable nonconformist nonstandard nonuniform pluralistic ragged rough spasmodic sporadic unequable unequal uneven unorthodox unstable unsteady unsystematic ununiform variable variegated various varying wavering