1)Perturbation – anxiety,mental uneasiness

 She sensed her friend’s perturbation.

 2)Bereavement – a state of having lost of close one who recently died

 There has been bereavement in the family.

 3)Tenuous – very weak or uncertain

 The connection between his story and what actually happened was tenuous.

 4)Contingency – a possible future situation or event

 We should better make contingency plan in case something happens wrong.

 5)Diaspora – the movement of people away from their own country

 His parents were part of scots diaspora.

 6)Delineate – to describe something in detail

 The way to hospital was clearly delineated in the map.

 7)Zeitgeist – mood of particular period of history

 The story capture the zeitgeist of the late 1960.

 8)Eminent – famous and important

 An Eminent Scientist.