A quandary is simply a dilemma or state of extreme uncertainty. The word is now a little used, apart from in the phrase in a quandary. In a quandary means Faced with a dilemma – perplexed and uncertain what to do
Example
What I ‘ve just found out is that someone who came with me from Earth has been put in an ethical quandary
Mark is in a quandary about whether or not he should keep the money he found in the park.