static void ai_spec_similarWord(S s) {
  if (nempty(ai_search_dollarX(s, "maybe similar to?", "$X"))) ret;
  S closest = levenClosestIC(listMinusIC(allIndexedFullTerms(), s), s);
  if (closest != null && neqic(s, closest))
    ai_postTriple(s, "maybe similar to?", closest);
}