What does "devout" most closely mean?

The term "devout" most closely refers to being deeply committed to a particular religion or spiritual practice. In this context, "pious" is a synonym that also conveys a sense of profound dedication or reverence towards religious beliefs or morals. Being pious implies having a sincere and earnest attitude in one's faith, emphasizing devotion and respect for spiritual matters.

While "religious" may also appear to be a strong choice, it is broader and encompasses anyone who adheres to a religion, not necessarily implying the depth of commitment that "devout" or "pious" suggests. Therefore, pious captures the essence of being devout more closely, as it highlights that intense dedication and reverence.

The other options do not align with the core meaning of "devout." "Contentious" describes someone who argues or causes controversy and has no relationship to religious devotion. Similarly, "impolite" refers to a lack of courtesy or manners, which is entirely unrelated to the concept of being committed to a faith or spiritual practices. Thus, "pious" is the best representation of the meaning of "devout."