patternless

About 0.02 uses per million words.

Meaning

1. adjective Without a decorative pattern.
2. adjective Without a repeating pattern; random.
3. adjective That does not cut around a pattern.
4. adjective That does not belong to a programming or markup pattern.

Similar words

ornamentless stripeless designless plain pleatless undecorated featureless fabricless plaidless simple

Often followed by

and pattern or carpet sheets