Look at a full imperfect of γράφω "write" and one letter seems to come and go without warning:
έγραφα, έγραφες, έγραφε, γράφαμε, γράφατε, έγραφαν.
The stressed ε- sits at the front of four forms and simply isn't there in the other two. This little ε- is the augment, an inherited past-tense marker. Its productive pattern in neutral Standard Greek is largely predictable from stress; older, literary and regional forms sometimes retain an extra unstressed augment. This page is about that behaviour in the imperfect; for the paradigm as a whole see the imperfect of Class Α verbs, and for the augment across the whole verb system, the augment overview.
The neutral Standard rule: the augment carries the stress
In older Greek the augment was a grammatical marker of past time in its own right. In the productive neutral-Standard pattern, its role is now phonological: recessive past stress moves left as far as the third-from-last syllable (the antepenult), and a short Class Α form adds stressed ε- when it would otherwise be too short to place the stress there. This learner rule does not erase unstressed augments preserved in other periods and registers.
Attach the imperfect endings -α, -ες, -ε, -αμε, -ατε, -αν to γραφ-:
- 1sg γραφ + α would give only two syllables, so Greek supplies έ-: έγραφα (έ-γρα-φα).
- 1pl γραφ + αμε gives three-syllable γράφαμε, so no augment is needed.
That is the productive Standard pattern for simple verbs. The augment is a crutch for the stress, added when the ending is short:
| Person | Form | Syllables | Augment? |
|---|---|---|---|
| εγώ | έγραφα | έ-γρα-φα | yes |
| εσύ | έγραφες | έ-γρα-φες | yes |
| αυτός | έγραφε | έ-γρα-φε | yes |
| εμείς | γράφαμε | γρά-φα-με | no |
| εσείς | γράφατε | γρά-φα-τε | no |
| αυτοί | έγραφαν | έ-γρα-φαν | yes |
Κάθε βράδυ έγραφα λίγες σελίδες στο ημερολόγιό μου.
káthe vrádhi éghrafa líyes selídhes sto imerolóyió mu
Every night I would write a few pages in my diary.
The same rhythm governs short Class Α verbs such as παίζω "play":
Τα παιδιά έπαιζαν στην αυλή μέχρι να σκοτεινιάσει.
ta pedhiá épezan stin avlí méchri na skotiniási
The children were playing in the yard until it got dark.
The 3rd plural can go either way
The 3rd plural has -αν and colloquial -ανε. Short γρά-φαν needs the augment (έγραφαν); three-syllable γράφανε does not. Both are correct.
Class Β in neutral Standard: no productive augment
The verbs that build their imperfect on the stressed -ούσ- suffix — Class Β verbs like αγαπώ, μιλώ and περπατώ — can host the stress themselves. Neutral current Standard therefore has αγαπούσα, μιλούσα, περπατούσα, with no productive augment. Older, literary and regional Greek may retain an unstressed external ε-, as in εμιλούσε or εμιλούσαμε; those are genuine marked forms, not the neutral learner default.
Μιλούσαμε ώρες στο τηλέφωνο όταν ήμασταν φοιτητές.
milúsame óres sto tiléfono ótan ímastan fitités
We used to talk for hours on the phone when we were students.
Compound verbs: the placement is lexical
Prefixes add syllables, so many compounds need no augment: καταλαβαίνω has imperfect καταλάβαινα, with antepenultimate stress already available.
Δεν καταλάβαινα τίποτα από αυτά που έλεγε.
dhen katalávena típota apó aftá pu éleye
I didn't understand anything of what he was saying.
Learned prefixed verbs may instead take an internal augment: formal περιέγραφε contrasts with demotic περίγραφε. Productive ξανα- also licenses external placement: both ξανάγραφα and ξαναέγραφα are Standard. Learn the licensed pattern with the compound.
Ο δημοσιογράφος περιέγραφε τη σκηνή με κάθε λεπτομέρεια.
o dhimosioghráfos periéghrafe ti skiní me káthe leptoméria
The journalist was describing the scene in every detail.
The parallel aorist system has its own compound quirks — κατάλαβα, περιέγραψα — and they are gathered on the aorist augment.
A note on register and dialect
Older, literary and regional Greek may keep an unstressed ε- where neutral current Standard drops it: εγράφαμε, εδιάβαζε, εμιλούσαμε.
Τα βράδια εδιάβαζε ξανά τα γράμματα της μητέρας του.
ta vrádhia edhiávaze ksaná ta ghrámata tis mitéras tu
In the evenings he would reread his mother's letters. (literary)
Literary εδιάβαζε corresponds to neutral current διάβαζε. An extra unstressed ε- can therefore mark period or region rather than error.
Common Mistakes
1. Dropping the augment where the 1st singular needs it. A short-stem verb has nowhere to put the stress without the ε-, so ×γράφα is impossible.
❌ Δεν γράφα ποτέ γράμματα, προτιμούσα να τηλεφωνώ.
Incorrect — the 1sg imperfect needs the augment to host the stress: έγραφα.
✅ Δεν έγραφα ποτέ γράμματα, προτιμούσα να τηλεφωνώ.
dhen éghrafa poté ghrámata, protimúsa na tilefonó
I never used to write letters; I preferred to phone.
2. Carrying the stressed augment into the plural. In the 1st and 2nd plural the standard language drops the ε- entirely; it is never stressed there.
❌ Κάθε μέρα έπαιζαμε στην παραλία μέχρι το ηλιοβασίλεμα.
Incorrect — the 1st plural drops the augment: παίζαμε.
✅ Κάθε μέρα παίζαμε στην παραλία μέχρι το ηλιοβασίλεμα.
káthe méra pézame stin paralía méchri to iliovasílema
Every day we played on the beach until sunset.
3. Copying a stressed έ- onto καταλαβαίνω. Neutral Standard has καταλάβαινα. External augmentation is licensed in forms such as ξαναέγραφα, but not as a mechanical prefix with impossible stress.
❌ Δεν έκαταλάβαινα γιατί ήταν θυμωμένος μαζί μου.
Incorrect — use neutral Standard καταλάβαινα; the written accent also cannot stand this far from the word's end.
✅ Δεν καταλάβαινα γιατί ήταν θυμωμένος μαζί μου.
dhen katalávena yatí ítan thimoménos mazí mu
I didn't understand why he was angry with me.
Key Takeaways
- In neutral Standard, the productive imperfect augment is a stressed ε- that lets recessive past stress reach the antepenult.
- It appears when the word would otherwise be too short — the singular and 3rd plural of short Class Α verbs (έγραφα … έγραφαν) — and drops in the 1st and 2nd plural (γράφαμε, γράφατε).
- Neutral Class Β uses its stressed -ούσα suffix without a productive augment (αγαπούσα, μιλούσα).
- Compounds may need none (καταλάβαινα), take an internal augment (formal περιέγραφε), or license external placement (ξαναέγραφα); the pattern is lexical.
- Retained unstressed augments (εγράφαμε, εδιάβαζε, εμιλούσαμε) are older, literary or regional, not the neutral current learner default.
Related Topics
- The Augment (past-tense ε-)A2 — Why Greek past tenses sometimes grow an extra ε- at the front (έγραψα, έπαιξα) and sometimes don't (αγόρασα, διάβασα) — the overt augment is governed primarily by the need to carry stress, and that idea explains its basic comings and goings.
- The Augment in the AoristA2 — The stressed ε- in έγραψα, έπαιξα and έτρεξα appears when a short past form needs another syllable to carry antepenultimate stress; its distribution parallels the imperfect, while the aorist uses the perfective stem.
- Imperfect: Class ΑA2 — The imperfect (παρατατικός) of the big -ω verb class — έγραφα, έπαιζα, διάβαζα — built from the present stem plus the past endings -α/-ες/-ε/-αμε/-ατε/-αν, with neutral Standard adding stress-carrying ε- wherever a short form cannot carry antepenultimate stress.