Which term is associated with being fearless?

The term "intrepid" is indeed associated with being fearless. It describes a person who is characterized by their courage and bravery, often in the face of danger or uncertainty. Intrepid individuals show a remarkable quality of undertaking ventures that might be daunting or risky without showing apprehension or fear. This attribute is often admired in explorers, adventurers, and those who take on challenges that require a strong sense of bravery.

In contrast, the other terms do not convey the same sentiment. "Insufferable" describes something that is intolerable or unbearable, which does not relate to fearlessness. "Inundate" refers to overwhelming someone or something, typically with a flood of water or an excessive amount of tasks or information, and it does not connect to the concept of bravery. "Levity" involves lightness or humor, especially in a serious situation, which is also unrelated to being fearless. Hence, "intrepid" is the term that directly aligns with the idea of fearlessness.