Plainly
look up a word, understand it — no rabbit hole
anathema
nounuh-NATH-uh-muh
meaning in plain English
Something almost everyone strongly dislikes or sees as totally unacceptable.
Think a big red X — an anathema is something people say no to, hard.
for example
To the health‑conscious chef, processed junk food is an anathema.
An anathema is something people reject completely. Why will the chef not touch frozen pizza? Because to her it is an anathema — against everything she believes about food.