Greek Grammar Basics: A Roadmap, Not a Course

The three noun genders

Every Greek noun is masculine, feminine, or neuter, and there's no way around learning the gender with each word. The article that comes with the noun tells you which one it is.

• Masculine, uses ο in the nominative singular. Examples, ο άνθρωπος (the person), ο καφές (the coffee), ο πατέρας (the father).
• Feminine, uses η in the nominative singular. Examples, η μητέρα (the mother), η θάλασσα (the sea), η ώρα (the hour).
• Neuter, uses το in the nominative singular. Examples, το παιδί (the child), το σπίτι (the house), το νερό (the water).

The ending of the word usually (but not always) hints at the gender. Words ending in -ος tend to be masculine, words ending in -α or -η tend to be feminine, and words ending in -ο, -ι, or -μα tend to be neuter. There are enough exceptions that you should always learn each noun with its article, so 'the coffee' rather than just 'coffee'.

This matches most other European languages that have grammatical gender (Spanish, German, French, Russian), and it's one of the reasons Greek clicks faster for learners who already speak one of those than for pure English speakers.

The four cases (in the order to learn them)

Greek nouns change their ending depending on the job they do in the sentence. There are four cases, and the practical advice is to learn them in this order.

1. Nominative (the subject of the sentence). This is the form you find in the dictionary. Ο Γιάννης τρώει (Yiannis is eating). Learn this first, it's the default.

2. Accusative (the direct object, and after most prepositions). Ο Γιάννης βλέπει τον Πέτρο (Yiannis sees Petros). Also used after στο, από, με, για, and so on. This is the second most common case and should come in weeks 4 to 8.

3. Genitive (possession, 'of'). Το σπίτι του Γιάννη (Yiannis's house, literally 'the house of Yiannis'). Also used for the indirect object in some constructions. Add this around month 3, once the accusative feels natural.

4. Vocative (direct address, calling someone). Γιάννη! (Yiannis!). The most limited case, used mainly when addressing people by name or title. Learn it when you start speaking to people, usually around month 3 to 4.

Greek used to have a fifth case (the dative), but it fell out of everyday use around a thousand years ago. You'll see it in the phrases *εν τω μεταξύ* (in the meantime) and *τοις εκατό* (per cent), and that's about it.

The definite article agrees with everything

The word 'the' in Greek isn't one word, it's a small system that agrees with the noun's gender, number, and case. Here's the full singular table.

• Nominative, ο (masc), η (fem), το (neut). Ο άντρας, η γυναίκα, το παιδί.
• Accusative, τον (masc), την (fem), το (neut). Βλέπω τον άντρα, τη γυναίκα, το παιδί.
• Genitive, του (masc), της (fem), του (neut). Το σπίτι του άντρα, της γυναίκας, του παιδιού.

And the plural.

• Nominative, οι (masc/fem), τα (neut). Οι άντρες, οι γυναίκες, τα παιδιά.
• Accusative, τους (masc), τις (fem), τα (neut). Βλέπω τους άντρες, τις γυναίκες, τα παιδιά.
• Genitive, των (all genders). Τα σπίτια των αντρών, των γυναικών, των παιδιών.

If you can drill this table in month 1, your grammar accuracy jumps in every sentence you write from then on. It's the single most productive grammar drill in the whole language, because 'the' shows up in almost every sentence.

The two verb groups

Greek verbs split into two big groups based on where the stress falls in the present tense.

Group A verbs are stressed on the stem, not the ending. Endings are -ω, -εις, -ει, -ουμε, -ετε, -ουν. Example, γράφω (I write): γράφω, γράφεις, γράφει, γράφουμε, γράφετε, γράφουν. Most beginner verbs are in this group, including τρώω (eat), πίνω (drink), βλέπω (see), κάνω (do), θέλω (want).

Group B verbs are stressed on the ending. There are two subtypes here.

• Group B1 ends in -άω/-ώ, with endings -άω, -άς, -άει, -άμε, -άτε, -άνε. Example, αγαπάω (I love): αγαπάω, αγαπάς, αγαπάει, αγαπάμε, αγαπάτε, αγαπάνε. Includes ρωτάω (ask), γελάω (laugh), περπατάω (walk).
• Group B2 ends in -ώ (no alternative), with endings -ώ, -είς, -εί, -ούμε, -είτε, -ούν. Example, μπορώ (I can): μπορώ, μπορείς, μπορεί, μπορούμε, μπορείτε, μπορούν. Includes ζω (live), οδηγώ (drive).

A handful of high-frequency verbs are irregular and just need memorising: είμαι (be), έχω (have, regular in the present but with an odd aorist), πάω (go), ξέρω (know), λέω (say). Learn those in isolation, don't try to fit them into the group pattern.

The three past tenses (yes, three)

Greek has three past tenses, and the difference between them is about how you view the action, not just when it happened.

Aorist (past perfective) is for a single completed action, roughly like the English simple past. Έγραψα ένα γράμμα (I wrote a letter). Formed from a special aorist stem that you have to learn per verb (γράφω becomes έγραψα), plus regular endings.

Imperfect (past imperfective) is for repeated or ongoing action in the past, roughly like the English 'used to' or 'was doing'. Έγραφα γράμματα κάθε εβδομάδα (I used to write letters every week). Formed from the present stem with augmented endings.

Perfect (past with present relevance) is roughly 'have written', built with έχω plus a special participle. Έχω γράψει το γράμμα (I have written the letter). Less used in speech than the aorist, more common in writing.

Most beginner courses cover the present and aorist in the first 3 months, add the imperfect in month 4 or 5, and leave the perfect for A2/B1. The aorist is the biggest hurdle because you have to learn the perfective stem of every verb, but once you've done the top 50 verbs, the pattern starts to feel predictable.

Adjective agreement (short version)

Adjectives in Greek agree with the noun in gender, number, and case, exactly like the article does. So 'the good student' changes ending depending on whether the student is masculine, feminine, or neuter.

• ο καλός μαθητής (the good male student, masc nom sg)
• η καλή μαθήτρια (the good female student, fem nom sg)
• το καλό παιδί (the good child, neut nom sg)

The accusative and genitive have their own endings, so κόσος καλού μαθητή (the good student's), τον καλό μαθητή (I see the good student), and so on. Most beginner adjectives follow one of three regular patterns (like καλός, καλή, καλό), and once you've learned the pattern for one adjective, the others slot in.

The common irregular adjective is πολύς, πολλή, πολύ (much/many), and it changes irregularly enough that it's worth memorising as its own table rather than trying to derive it.

The roadmap in one page

If you're planning a self-study curriculum, here's the order of grammar topics that tends to work.

Month 1, alphabet, present tense of είμαι and έχω, nominative and accusative singular, definite article singular, numbers 1 to 100.

Month 2, present tense of Group A verbs, question words, negation with δεν, possessives (μου, σου, του), basic prepositions (σε, από, με).

Month 3, plural nouns and articles, present tense of Group B verbs, aorist of common regular verbs, genitive for possession, days and months.

Month 4, imperfect tense, subjunctive with να, future with θα, comparative and superlative adjectives.

Month 6, perfect tense with έχω, passive voice basics, conditional with αν, relative pronouns (που, ο οποίος).

Month 9, indirect objects and pronoun clitics (μου το έδωσε), reported speech, more subjunctive uses.

Year 2, participles, formal/archaic register (καθαρεύουσα leftovers), literary word order.

That's a full B1 to B2 grammar curriculum in one page. Each item is a lesson or two, not a month, and Greek2Me's A1 and A2 courses walk through the first six months of this roadmap in order.