Sinefuckency

- Noun {sin-i-fuhk-n-see}

The state or condition of lacking fucks; of not giving a fuck.

{ "Sine-" (L. "without, lack") + "fuck" + "-ency" }

1.
Charles couldn't bring himself to finish his taxation law assignment as he was suffering from an acute case of late-semester sinefuckency

2.
Bloke 1: That bloke couldn't have appeared less interested in doing his job properly if he'd tried!
Bloke 2: Agreed, the sinefuckency was strong with that one!