←
Proto-Nahuan *aatl (inherited)
←
Proto-Uto-Aztecan *pa (inherited)
→
Central Huasteca Nahuatl atl (derived)
→
Classical Nahuatl acoatl (compound)
→
Classical Nahuatl amiztli (affix)
→
Classical Nahuatl acecec (affix)
→
Eastern Huasteca Nahuatl atl (cognate)
→
Central Nahuatl atl (derived)
→
Western Huasteca Nahuatl atl (derived)