an act or instance of isolating.

the state of being isolated.

the complete separation from others of a person suffering from contagious or infectious disease; quarantine.

the separation of a nation from other nations by isolationism.

Psychoanalysis . a process whereby an idea or memory is divested of its emotional component.

Sociology . social isolation.

noun

aloneness , aloofness , beleaguerment , concealment , confinement , desolation , detachment , exile , hiding , monkhood , privacy , privateness , quarantine , reclusion , reclusiveness , remoteness , retreat , seclusiveness , segregation , sequestration , solitude , withdrawal , insulation , separation , loneliness , singleness , solitariness