SOLIPSISM
solipsism
(noun) (philosophy) the philosophical theory that the self is all that you know to exist
Source: WordNet® 3.1
Etymology
Noun
solipsism (countable and uncountable, plural solipsisms)
(philosophy) The theory that the self is all that exists or that can be proven to exist.
Synonym: individualism
Self-absorption, an unawareness of the views or needs of others; self-centeredness; egoism.
Source: Wiktionary
So*lip"sism, n. Etym: [L. solus alone + ipse self.]
1. (Ethics)
Definition: Egotism. Krauth-Fleming.
2. (Metaph.)
Definition: Egoism. Krauth-Fleming.
Source: Webster’s Unabridged Dictionary 1913 Edition