The Collaborative International Dictionary
Diaphoretical
Diaphoretic \Di`a*pho*ret"ic\, Diaphoretical \Di`a*pho*ret"ic*al\, a. [L. diaphoreticus, Gr. ?: cf. F. diaphor['e]tique. See Diaphoresis.] Having the power to increase perspiration.
Wiktionary
diaphoretical
a. (alternative form of diaphoretic English)