nonproblematical

Example:Investing in a new market can be problematical, as it involves a lot of risks and uncertainties.

Definition:Not certain; uncertain; untrustworthy; likely to cause difficulty, concern, fear, or anxiety; involved with, having, or implying a problem.

Example:The dubious results of the study required further investigation.

Definition:Uncertain or questionable in validity, truth, or truthfulness; doubtful.

Example:The difficult task was completed successfully after weeks of hard work.

Definition:Hard to do, achieve, understand, or explain; needing or showing a high degree of skill; needing a lot of effort, patience, or determination to be successful; complicated or complicated in an intricate or puzzling way.