isolated (adj.)

"standing detached from others of its kind," 1740, a rendering into English of French isolé "isolated" (17c.), from Italian isolato, from Latin insulatus "made into an island," from insula "island" (see isle (n.)). English at first used the French word (isole, also isole'd, c. 1750), then after isolate (v.) became an English word, isolated became its past participle.

[F]or I think it very natural to suppose, that all the People of this isolated Country, (I ask Pardon for a foreign Word) should have one Language ... ["An Irregular Dissertation Occasioned by the Reading of Father Du Halde's Description of China," 1740]

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Definitions of isolated from WordNet

isolated (adj.)
remote and separate physically or socially; "preserved because they inhabited a place apart"- W.H.Hudson;
tiny isolated villages remote from centers of civilization
Synonyms: apart / obscure
isolated (adj.)
not close together in time;
isolated instances of rebellion
Synonyms: stray
isolated (adj.)
being or feeling set or kept apart from others; "could not remain the isolated figure he had been"- Sherwood Anderson;
Synonyms: detached / separated / set-apart
isolated (adj.)
marked by separation of or from usually contiguous elements; "little isolated worlds, as abruptly disjunct and unexpected as a palm-shaded well in the Sahara"- Scientific Monthly;
Synonyms: disjunct
isolated (adj.)
cut off or left behind;
an isolated pawn
Synonyms: marooned / stranded
isolated (adj.)
under forced isolation especially for health reasons;
isolated patients
Synonyms: quarantined