Which word is defined as dangerous or hazardous?

• A. Safe
• B. Treacherous
• C. Harmless
• D. Secure

Answer: (B)

The word that means dangerous or hazardous is "treacherous." This term is often used to describe situations, environments, or conditions that are not only risky but can also be deceitfully hazardous. For instance, treacherous terrain might look appealing but may have hidden dangers that could lead to accidents or injuries.

In contrast, terms like "safe," "harmless," and "secure" all convey a sense of protection or lack of danger. "Safe" refers to being free from harm or risk, "harmless" indicates something that does not pose any danger, while "secure" often relates to being free from or not exposed to danger. Thus, "treacherous" stands out as the word that accurately captures the essence of being dangerous or hazardous.