1) Peculiar – unusual or strange

 There is very peculiar smell in the room.

 2) Ascribe – to say that something was written by or belonged to somebody

 Many people ascribe this play to Kalidas.

 3) Sagacious – having and showing good judgement

 They were sagacious enough to avoid any outright confrontation.

 4) Ostentatious – expensive and noticeable in a way that is intended to impress people.

 The event was Ostentatious display of power and wealth.

 5) Servile – wanting to much to please somebody and obey them

 He bowed his head in a servile manner.

 6) Treatise – a long formal book

 A treatise on socio-economic theory.

 7) Exertion – move your body in a way that take much efforts.

 At his age physical exertion was dangerous.

 8) Epoch – a time period in history that is know because of particular event

 This event marked as epoch in their history.

 9) Metaphysics – a branch of philosophy that deal with existence of nature , truth 

 He is going to Harvard to study Metaphysics.

 10) forthright – saying exactly what you want to say in clear

 He replied in forthright manner.