Ixpiyacoc carries the Popol Vuh's feminine ix- prefix despite being the pair's male member, a detail the text's Mayanist translators note without a settled explanation, and the literal root behind piyacoc draws competing candidate readings rather than one agreed derivation.
What would resolve this A philological study addressing both the root itself and why the text marks a male figure with the feminine ix- prefix, which existing commentary notes but does not resolve, tested against a wider comparative K'iche' and Mayan vocabulary.
OpenK'iche' Maya philology, Mesoamerican historical linguisticstranslated by Dennis Tedlock, Popol Vuh: The Definitive Edition of the Mayan Book of the Dawn of Life