Aorist Active Infinitive of /μι Verbs

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Introduction

The aorist active infinitive of /μι verbs uses /έναι:

          δο/έναι > δοῦναι
          θε/έναι > θεῖναι
          Jε/έναι > εἷναι

BASE

/έναι

This is unlike athematic aorist active infinitives and progressive active infinitives of /μι verbs, which use zero-grade /ναι. Compare the above (aorist active infinitives of /μι verbs) to the below (progressive active infinitives of the same /μι verbs):

          δι/δό/ναι > διδόναι
          θι/θέ/ναι > τιθέναι
          Jι/Jέ/ναι > ἱέναι