出典:Wiktionary
出典:『Wiktionary』 (2026/03/31 22:31 UTC 版)
Probably from Proto-Italic *apjō, from Proto-Indo-European *Hp-i-. The following two roots have been proposed:
Within Latin, other possibly related terms include apīscor, coepiō, cōpula (“bond, tie, connection; band, leash”), apex.
The only form of apiō in common use is the perfect participle aptus, which is used as an adjective with a range of senses, not all of which necessarily share the same etymology. (Rix derives the adjective aptus (“suitable, fitting”) from *h₂ep- but apiō and apīscor from *h₁ep-.) The present (or infectum) stem is attested only a few times, in etymological explanations given in works of Saint Isidore of Seville, Paul the Deacon (summarizing Sextus Pompeius Festus) and Servius, as well as glosses.
The perfect stem is hypothesized to have originally been *ēp-; compare coēpit in Lucretius 4.619.
apiō (present infinitive apere, supine aptum); third (-iō variant) conjugation, no perfect stem
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opahs
pipits
フェーベ
coots
オオハシカッコウ
hoopoes
eelpouts
the pintail