solipsism
noun/ˈsɒlɪpsɪzəm/
/ˈsɑːlɪpsɪzəm/
[uncountable] (philosophy)- the theory that only the self exists or can be knownWord Originlate 19th cent.: from Latin solus ‘alone’ + ipse ‘self’ + -ism.
Check pronunciation:
solipsism