Uncertainty is a feeling of not being sure about something, and can be expressed in many ways. ENIGMA (6 letters) is a puzzle or mystery that is difficult to solve. DILEMMA (7 letters) is a situation where a choice must be made between two or more options, each of which has drawbacks. WORRY (5 letters) is a feeling of ANXIETY or unease about a possible problem or danger. CONFUSION (9 letters) is a state of being bewildered or unclear about something. CONCERN (7 letters) is a feeling of WORRY or interest about something. MAZE (4 letters) is a complex system of paths or passages in which it is easy to get lost. ANXIETY (7 letters) is a feeling of fear or WORRY about what might happen. BEWILDERMENT (12 letters) is a state of CONFUSION or perplexity. DUBIETY (7 letters) is the state of being uncertain or doubtful. RISK (4 letters) is the possibility of suffering harm or loss. DOUBT (5 letters) is a feeling of uncertainty or lack of conviction. QUALM (5 letters) is an uneasy feeling or DOUBT about the morality or propriety of a course of action. Grayarea (8 letters) is an area of uncertainty or ambiguity. Iffiness (8 letters) is the quality of being uncertain or unreliable. Spottiness (10 letters) is the quality of being uneven or inconsistent. AMBIVALENCE (11 letters) is the state of having mixed feelings or contradictory ideas about something.