Wiktionary
patternless
a. 1 Without pattern; random 2 (context of certain machinery for cutting shapes English) That do not cut around a pattern 3 (context in computer science of an object English) That does not belong to any known programming or markup pattern
Usage examples of "patternless".
Because the only time I saw patternless faults like these on an unexposed image-leaf.
Chilled even beneath the thick hooded coat, the winds snarling like wolves around him, he lost sense of the river's position, felt the whole world a blind, patternless turmoil.