Exhilarant
Pronunciation : Ex*hil"a*rant
Part of Speech : a.
Etymology : [L. exhilarans. -antis, p. pr. See Exhilarate.]
Definition : Defn: Exciting joy, mirth, or pleasure. -- n.
Defn: That which exhilarates.
Source : Webster's Unabridged Dictionary, 1913