nonchain means not of or pertaining to a chain (in various senses). Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Etymology
From non- + chain.
adj
- Not of or pertaining to a chain (in various senses).“radical nonchain reaction sequences”
noun
- A retail outlet that is not a chain.“Several nonchain hamburger restaurants have also opened around the state in recent months, among them Boom, a Belmar restaurant that buys its meat from Pat La Frieda Wholesale Meat Purveyors in Manhattan and offers its signature Boom burger, about a half pound, for $9.50.”