That does not belong to any known programming or markup pattern(adjective)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "patternless" in a sentence
"The search for patternless form persisted well beyond Schoenberg, of course, and may account for what the critic Henry Pleasants termed "the agony of modern music.""
"When she remodeled the house — transformed it, really — she brought together golds, yellows, reds, greens, sage and Chinese lacquer, all unified by a carpet that might have pleased Jackson Pollack, a studiously patternless palette of color blotches that gave every first-time viewer pause."
"Marijuana, alcohol, and many other drugs will cause a spider to spin wild, patternless trash."