Perfect Middle and Passive Infinitive

---

Introduction

A key marker of the perfect middle and passive is athematic formation. To form the perfect middle and passive infinitive, we add /σθαι:

          λε/λύ/σθαι > λελύσθαι
          πε/πίθ/σθαι > πεπεῖσθαι

perfect stem (BASE + perfect aspect markers)

/σθαι