Stupefactive
Pronunciation : Stu`pe*fac"tive
Part of Speech : a.
Etymology : [Cf. F. stup?factif, LL. stupefactivus.]
Definition : Defn: Same as Stupefacient. [Written also stupifactive.]
& n.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder