unreproducible
- a impossible to reproduce or duplicate
- His emblematic work (for Americans) was White Square on White, 1918 -- that unreproducible, fierce, magical white square, canted on a slightly warmer white ground, which has been .
- Bizarre, candid and mostly unreproducible (by now, Samaras must have the most lavishly documented penis in Western art), they constitute a veritable epic of narcissism.