erethism

noun

er·​e·​thism ˈer-ə-ˌthi-zəm 

: abnormal irritability or responsiveness to stimulation

Word History

Etymology

French éréthisme, from Greek erethismos irritation, from erethizein to irritate; akin to Greek ornynai to rouse — more at orient entry 2

First Known Use

1800, in the meaning defined above

Medical Definition

erethism

noun

er·​e·​thism ˈer-ə-ˌthiz-əm 

: abnormal irritability or responsiveness to stimulation

erethic

ə-ˈreth-ik, er-ˈeth- 

adjective