AKC concern can be expressed in many different ways, depending on the context. Some synonyms for AKC concern might include "anxiety," "apprehension," "unease," or "worry." Other options include "preoccupation," "bother," "disquiet," and "dismay." Some similar phrases might include "cause for concern," "matter of worry," or "source of apprehension." Whatever words or phrases are used to describe AKC concern, it is clear that the issue at hand is one that raises significant alarm or distress, and requires careful attention and consideration to address and resolve.