Quandary

quan·da·ry (kwnd-r, -dr) n. pl. quan·da·ries A state of uncertainty or perplexity.

Quid Pro Quo

http://en.wikipedia.org/wiki/Quid_pro_quo

Satiety

Satiety   The condition of being full or gratified beyond the point of satisfaction.

Satiate

Satiate To satisfy (an appetite or desire) fully.