While we won’t be deferring to Urban Dictionary’s contemporary
definition, we did find it an amusing correspondence between modern portmanteau and an eighteenth century classicist terminology. Antiquated and obsolete as it is
nutual does seem like a useful word that would retain its niche in the language signifying something expressed by gesture alone and was borrowed, introduced to English to translate the above Latin phrase said of prayers, made by heart, voice and genuflection.