Which word relates to something that is limitless or profound?

The word that relates to something that is limitless or profound is "abysmal." This term comes from the concept of an abyss, which refers to a deep or seemingly bottomless chasm. When something is described as abysmal, it often conveys a sense of depth, whether it's in a literal sense or metaphorically, in terms of emotions, concepts, or situations that feel extensive and profound. Using this word suggests that the subject has a significant or overwhelming quality, often invoking feelings of vastness or profundity.

In contrast, the other terms do not carry the same connotation of limitlessness. "Acolyte" refers to a follower or assistant in religious contexts. "Acerbic" describes a sharp or biting tone, usually referring to speech or writing, which does not imply depth or limitlessness. "Abject" typically denotes a state of being miserable or wretched, which focuses on a negative condition rather than conveying a sense of vastness or profundity. Thus, abysmal is the term that captures the essence of something profound or limitless.