undiluted

From un- +‎ diluted.

undiluted (not comparable)

1. Not diluted or mixed with other substances.
2. (figurative) Pure; unadulterated; free from extraneous elements.
   • 1948, The Saturday Evening Post (volume 220, part 4, page 29)

     Boyer's try at stinkerdom was his psychopathic persecution of Ingrid Bergman in Gaslight. The closest MacMurray came to undiluted scalawaggery was as the fall guy in Double Indemnity.