Nelson-Denny Practice Test 2025 – Comprehensive All-in-One Guide for Exam Success!

The term that best describes someone who acts without seriousness in a situation is "flippant." This word characterizes an individual who is not only dismissive but also treats important matters or conversations with a lack of respect or levity. A flippant demeanor often comes across as being unconcerned or insincere, indicating a tendency to make light of serious topics or situations. This behavior can be particularly problematic in contexts where gravity and seriousness are expected.

In contrast, the other terms do not specifically convey a lack of seriousness. "Feckless" refers to someone who is ineffective or lacking in initiative, which does not necessarily imply a flippant attitude. "Apathetic" indicates a lack of interest, enthusiasm, or concern, suggesting disengagement rather than a lighthearted approach. "Doltish" describes someone who is foolish or slow-witted, implying a lack of intelligence rather than a lack of seriousness in behavior. Thus, among the choices, flippant is the most accurate descriptor for someone who behaves unseriously in a situation.