Which adjective best describes something that is ordinary or commonplace?

The term "mundane" is used to describe something that is ordinary, commonplace, or lacking in excitement. It often refers to the everyday aspects of life that do not stand out or draw attention due to their familiarity or routine nature. For example, mundane tasks like washing dishes or commuting to work are seen as typical, unremarkable activities that most people encounter regularly.

The other options have distinct meanings that do not align with the concept of being ordinary. "Meager" suggests something that is insufficient or lacking in quantity, which does not capture the essence of being commonplace. "Stupefy" refers to shocking or stunning someone, which leads to a sense of extraordinary rather than ordinary. "Tactful" describes a person who is considerate and diplomatic in dealing with others, a quality that relates to social interactions rather than to the state of being ordinary. Thus, "mundane" is the most appropriate choice to convey the idea of something being routine or unremarkable.