Proclivity

An inclination or predisposition; tendency

Usage - She had this strange proclivity to visit our home unannounced 

Ensconce

Establish in a comfortable, safe or secret place


Usage - Pandavas  ensconced themselves in court of virata

Caprice

a sudden, unpredictable change,as of one's mood or behavior 


Usage :- Talent and intelligence never yet inoculated anyone against the caprice of the fate.

Pretentious

Attempting to impress by affecting greater importance or merit than is actually possessed

Usage - I admire your pretentiousness,but it's not going to cut ice with me 

Treachery

1) Willful betrayal of fidelity,confidence or trust
2) The act or an instance of such betrayal

Usage : Tricks and Treachery are merely proof of lack of skills 

Travail

Verb - toil, labor

Eg usage : Labor day is the day on which we recognize those men and women who daily  travail with little appreciation or compensation.

Noun : hustle,

Source : m-w.com

Inundated

Synonyms : Overwhelm, deluge, to cover with flood - overflow

Eg : 1. he received a deluge of offers ;
2. I was inundated with phone calls

Usage : In our crazy, hectic, modern life, we’re inundated with choices.

Source Art Of Manliness