motley A motley crew of educators and students gathered at the seminar.
mottled Bronzing bracken and mottled bramble gleamed in the light of the sinking sun.
dappled The path was dappled with sunlight.
mosaic Please ensure the genitals are obscured by a mosaic effect.
checkered My summer school dress is blue and white checkered.

Popularity over time

Use in printed books, per decade from 1850 to 2019.

By length

4 letters: pied¹
6 letters: varied², mosaic³, motley²
7 letters: various³, figured², spotted², rainbow², mottled², dappled, flecked, piebald²
8 letters: distinct², colorful³, assorted³, streaked¹
9 letters: different³, colourful, patterned², checkered², prismatic³, chequered, multihued, colorific
10 letters: multicolor⁴, polychrome³, colourific
11 letters: diversified⁴, multicolour, varicolored
12 letters: multicolored⁴, particolored, varicoloured
13 letters: kaleidoscopic, multicoloured, polychromatic, particoloured, multicolorous

The small number after each word is its number of syllables (varied² = 2 syllables).