What is a synonym for perilous in the context of describing journeys?

The term "perilous" refers to something that is full of danger or risk, especially in the context of journeys or adventures. A synonym should convey a similar sense of threat or insecurity. The word "hazardous" aligns perfectly with this definition, as it denotes a situation involving risk or danger, making it an appropriate choice when describing journeys that may be fraught with challenges.

The other options do not convey this sense of danger. "Safe" suggests the absence of risk, making it the opposite of perilous. "Convenient" refers to something that is easy or suited to one’s needs and does not address the element of danger. "Simple" implies a lack of complexity or difficulty, which also does not relate to the idea of taking risks during a journey. Thus, "hazardous" stands out as the most suitable synonym for "perilous."