autoerotism

noun

au·​to·​er·​o·​tism ˌȯt-ō-ˈer-ə-ˌtiz-əm 

variants or autoeroticism

-i-ˈrät-ə-ˌsiz-əm 

1

: sexual gratification obtained solely through stimulation by oneself of one's own body compare alloerotism

2

: sexual feeling arising without known external stimulation

autoerotic

-i-ˈrät-ik 

adjective

autoerotically

-i-k(ə-)lē 

adverb