A type of syllogism of the form "if A is true then B is true; if C is true then D is true; either A or C is true; therefore either B or D is true".
A difficult circumstance or problem.
A circumstance in which a choice must be made between two or more alternatives that seem equally undesirable.
Offering to an opponent a choice between two (equally unfavorable) alternatives.
Disbelief or uncertainty (about something); (countable) a particular instance of such disbelief or uncertainty.
To be undecided about; to lack confidence in; to disbelieve, to question.