出典:Wiktionary
From vātēs (“seer, soothsayer, prophet”) and canō (“to sing; to recite; to foretell, predict, prophesy”). The change from -a- to -i- follows the common pattern of Latin vowel reduction in non-initial syllables. As canō is a third-conjugation verb, the derivation of first-conjugation vāticinor may involve more steps than simple compounding of the base noun and verb; many first-conjugation verbs are denominative (derived from nouns または adjectives), and it has been hypothesized that an intermediate step in the derivation of vāticinor was a compound noun *vāti-cinium.[1]
It is also hypothesized that this verb was the original basis from which the ending -cinor was extended by analogy to be used as a suffix to form other verbs, such as ratiōcinor and sermōcinor.[2]
vāticinor (present infinitive vāticinārī, perfect active vāticinātus sum); first conjugation, deponent