exhilarant


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ex·hil·a·rant

(eg-zil'ă-rant),
Mentally stimulating.
[L. ex-hilaro, pp. -atus, pres. p. -ans, to gladden]

exhilarant

(ĕg-zĭl′ăr-ănt) [L. exhilarare, to gladden]
Something that is mentally stimulating.