出典:Wiktionary
oppugnō (present infinitive oppugnāre, perfect active oppugnāvī, supine oppugnātum); first conjugation
1At least one use of the archaic "sigmatic future" and "sigmatic aorist" tenses is attested, which are used by Old Latin writers; most notably Plautus and Terence. The sigmatic future is generally ascribed a future or future perfect meaning, while the sigmatic aorist expresses a possible desire ("might want to").
2At least one rare poetic syncopated perfect form is attested.