Insidious [Katniss/Gale in the Hunger Games]

sneaking and spying under suspicion. 

Travail [Sports Practice]

A troubling, very hard and challenging thing you do. 

Fulsome [An unopened can of soda]

To be filled to the brim.

Lavish [Lindsay Lohan]

To be loosey goosey.

Abdicate [Richard Nixon]

To resign from power.

Enervating [Jersey Shore]

Causing an annoyance after a period of time.

Perfidious [Smee from Peter Pan]

Meaning to be a traitor.

Boon [Something from Santa]

A gracious present.

Oblivious [Dumb blondes]

To be unaware of something.

Abyss [Hell]

Primal chaos; a very bad place.

Tenacious [The Little Engine That Could]

To not give up.