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Odi et amo. Quare id...

this sort of defective verb gives present system meanings to perfect system forms: perfect form has present meaning, pluperfect form has imperfect/past meaning, future perfect form has future meaning. so "odi" would conjugate "odi, odisti, odit, odimus, odistis, oderunt". With that in mind, it makes sense that the 2nd principal part (odisse) looks like a perfect infinitive, right?