Participle Agreement Rules

Everything English calls a participle lands in Greek as one of four different forms, and half of them agree with a noun while the other half never change shape at all. That is the entire content of "participle agreement": not a set of endings to memorise — each form's endings are taught on its own page — but knowing which box you are in before you write the word. This page is the inventory, the test, and the handful of agreement situations that no single-form page can cover.

The inventory

Read those three together. In the first, a neuter plural subject pulls -μένα onto two participles. In the second, a feminine plural subject leaves μιλώντας exactly as it was. In the third, a plural subject and a plural auxiliary leave σταλεί and απαντήσει exactly as they were. Same sentence-level information, three different responses.

The split is not arbitrary

Greek agreement is a link between a modifier and a noun. A word that has no noun to point at has nothing to agree with — and that, not tradition, is why the line falls where it does:

• -μένος and the learned -ων / -όμενος describe a noun. They are adjectives in everything but name, so they take the noun's gender, number and case.
• -οντας describes the verb. It is an adverb, and Greek adverbs do not inflect — γρήγορα does not become ×γρήγοροι for a plural subject either.
• -ει / -εί is welded to έχω, which is already carrying the person and number. A second set of endings would be redundant, so the form has none.

Once you can state the job, the agreement follows without a rule. It also means you can predict the behaviour of a participle you have never seen: if it sits in front of a noun, it will end up agreeing.

Case, not just gender

English-speaking learners get the gender right long before they get the case right, because English has neither and Greek courses drill gender first. But a participle copies all three properties of its noun, and the case is where a sentence quietly falls apart.

τραυματισμένων is genitive plural because επιβατών is; υπάρχουσα is nominative singular feminine because σύμβαση is. The learned participle in the second example is doing exactly the same work as the everyday one in the first — which is the point of putting them side by side. All the general machinery is on adjective agreement; a participle brings no extra rules with it.

What it agrees with: three slots

The agreeing participles turn up in three positions, and each one supplies a different noun to agree with. Two of them are worked through in detail on the passive participle as an adjective; collected here so the pattern is visible at once:

• attributive, inside the article — τα μαγειρεμένα φαγητά: agrees with the noun it precedes.
• predicative, after είμαι and its family — είμαι κουρασμένη: agrees with the subject.
• object-predicate, after βρίσκω, βλέπω, αφήνω — Βρήκα την πόρτα κλειδωμένη: agrees with the accusative object, not with the speaker.

What a participle does not take its ending from is the verb. If your ending changed because the verb was plural rather than because a noun was, you have made a guess — and the polite plural below is where that guess gets caught.

The polite plural: plural verb, singular participle

Here is the situation every course leaves out and every learner walks into within a month of arriving. When you address one person with the polite plural, the verb goes plural — but the participle describes a real human being who is still one person, so it stays singular, and it takes that person's actual gender.

Both are correct, and the participle is the only thing distinguishing them: ευχαριστημένος says one person, ευχαριστημένοι says a group. Getting this wrong does not produce a grammatical error so much as a factual one — you tell a hotel receptionist that there are several of you.

Coordinated subjects

Two subjects joined by και give a plural participle, and the gender is decided by a rule English never has to state:

• both masculine → masculine plural; both feminine → feminine plural; both neuter → neuter plural;
• mixed masculine and feminine → masculine plural for people, however outnumbered the masculine is. For things, Greek usually falls back on the neuter plural instead: Ο καναπές και η πολυθρόνα ήταν παλιά.

Two look-alikes that are not agreement

The -μένα adverb. Μίλησε συγκρατημένα and Τα παιδιά ήταν συγκρατημένα contain the identical word, and only one of them is agreeing. The adverb in -μένα is fixed in that shape whatever the subject; the neuter plural participle is that shape because its noun is neuter plural. The test is the usual one: find the noun it points at. If there is none, it is an adverb modifying the verb.

The gerund's second accent. Κοιτάζοντας becomes κοιτάζοντάς με when a weak pronoun attaches, and the extra accent can look like the form is changing after all. It is not: the ending is untouched, and the accent is pure clitic arithmetic, identical whether the speaker is a man, a woman or a crowd.

Common Mistakes

1. Pluralising the gerund to match a plural subject. It has one shape and takes its subject from the main verb, so there is nothing for a plural ending to do.

2. Giving the -εί form a plural ending after έχουν. The plural is already on the auxiliary; the second word holds still.

3. Getting the gender right and the case wrong. A masculine plural noun in the accusative needs a participle in the accusative too.

4. Making a mixed-gender subject feminine because the nearest noun is. Greek settles a mixed pair on the masculine plural, no matter which name comes last.

Key Takeaways

• Of the four participle-shaped forms, two agree (-μένος and the learned -ων / -όμενος) and two are frozen (the gerund -οντας and the -ει / -εί form after έχω).
• The split follows the job: forms that describe a noun agree; the gerund describes the verb, and the -ει form is carried by έχω, which already shows person and number.
• The test is the article slot: whatever fits into το _ γράμμα agrees.
• Agreement copies gender, number and case — the case is what learners drop (τους κουρασμένους εργάτες, των τραυματισμένων επιβατών).
• Three slots supply the noun: attributive, predicative (subject) and object-predicate (accusative object) — not the verb.
• With the polite plural the verb is plural but the participle is singular: Είστε ευχαριστημένος; to one man, Είστε ευχαριστημένοι; to a group.
• Coordinated subjects take the plural; a mixed masculine-plus-feminine pair of people takes the masculine plural, a mixed pair of things the neuter.
• Two things that look like agreement and are not: the fixed -μένα adverb (Μίλησε οργανωμένα) and the gerund's second accent under a clitic (κοιτάζοντάς με).