in isolation

i•so•la•tion n.

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.
Governmentthe separation of a nation from other nations by isolationism.
Psychologya process whereby an idea or memory is divested of its emotional component.
SociologySee social isolation.

solitude.

Collins Concise English Dictionary © HarperCollins Publishers::

isolation /ˌaɪsəˈleɪʃən/ n

the act of isolating or the condition of being isolated
(of a country, party, etc) nonparticipation in or withdrawal from international politics
social separation of a person who has or is suspected of having a contagious disease Compare quarantine
(as modifier): an isolation hospital
a lack of contact between persons, groups, or whole societies
the failure of an individual to maintain contact with others or genuine communication where interaction with others persists
Also called: isolation exercise a physical exercise that is designed to benefit a single joint or muscle group
in isolation ⇒ without regard to context, similar matters, etc

'in isolation' also found in these entries (note: many are not synonyms or translations):

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