isolation

The process of isolating someone or something; the state of being alone or separated; the state of being geographically separated.

• isolate/ˈaɪsəleɪt/(v)孤立；隔离
• isolated/ˈaɪsəleɪtɪd/(adj)孤立的；隔绝的

• in isolation
• sense of isolation
• social isolation
• political isolation
• work in isolation
• isolation and loneliness

1. 1.No policy should be considered in isolation — changes to the tax system will interact with many other areas of regulation.
2. 2.Social isolation among elderly people is a growing public health concern with well-documented effects on mental wellbeing.

• solitude/ˈsɒlɪtjuːd/— the state of being alone — sometimes positive
• separation/ˌsepəˈreɪʃən/— being kept apart
• withdrawal/wɪðˈdrɔːəl/— pulling back from contact

from French "isolation," from "isoler" (to isolate), from Italian "isolato" (island-like)