Synonyms 1. retirement, privacy. Solitude, isolation refer to a state of being or living alone. Solitude emphasizes the quality of being or feeling lonely and deserted: to live in solitude.Isolation may mean merely a detachment and separation from others: to be put in isolation with an infectious disease.2. loneliness. 3. desert, wilderness.
late 14c., from O.Fr. solitude "loneliness," from L. solitudinem (nom. solitudo) "loneliness," from solus "alone" (see sole (adj.)). "Not in common use in English until the 17th c." [OED]
"A man can be himself only so long as he is alone; ... if he does not love solitude, he will not love freedom; for it is only when he is alone that he is really free." [Schopenhauer, "The World as Will and Idea," 1818]