UNADULTERATED
complete, arrant(a), consummate, double-dyed, everlasting, gross, perfect, pure, sodding, stark, staring, thorough, thoroughgoing, utter, unadulterated
(adjective) without qualification; used informally as (often pejorative) intensifiers; “an arrant fool”; “a complete coward”; “a consummate fool”; “a double-dyed villain”; “gross negligence”; “a perfect idiot”; “pure folly”; “what a sodding mess”; “stark staring mad”; “a thorough nuisance”; “a thoroughgoing villain”; “utter nonsense”; “the unadulterated truth”
unadulterated
(adjective) not mixed with impurities; “unadulterated maple syrup”
Source: WordNet® 3.1
Etymology
Adjective
unadulterated (not comparable)
pure; not mixed or adulterated with anything
utter or out-and-out, especially in the phrase unadulterated truth
Source: Wiktionary
Un`a*dul"ter*ate, Un`a*dul"ter*a`ted, a.
Definition: Not adulterated; pure. "Unadulterate air." Cowper.
– Un`a*dul"ter*ate*ly, adv.
Source: Webster’s Unabridged Dictionary 1913 Edition