In short

Greek builds most manner adverbs from adjectives with a single ending: -α. Take the adjective, put on -α, and you have the adverb — καλός “good” gives καλά “well”, γρήγορος “fast” gives γρήγορα “quickly”. The form looks exactly like the neuter plural of the adjective, and that is not a coincidence: it is the neuter plural, frozen into an adverb.

Adverbs never change: no gender, no number, no case. Once you have καλά, that is the only form there is.

On top of that you learn four small closed lists that you simply memorise — where (εδώ, έξω, κοντά), when (τώρα, αύριο, ποτέ), how (καλά, μαζί, έτσι) and how much (πολύ, λίγο, καθόλου). Adverbs also compare, with the same two strategies you met for adjectives: πιο γρήγορα or γρηγορότερα “faster”.

The rule

1. Formation: adjective + -α. From any adjective in -ος, -η/-α, -ο take the stem and add -α. The stress stays where the adjective had it:

• ήσυχος → ήσυχα “quietly”
• εύκολος → εύκολα “easily”
• ωραίος → ωραία “nicely”
• ακριβός → ακριβά “expensively”

2. The -α / -ως doublets. A number of adverbs also have a second form in -ως, inherited from the older written language. Three things can happen:

• The two forms mean the same and -ως is just more formal: βέβαια / βεβαίως “of course”, τελικά / τελικώς “finally”, σπάνια / σπανίως “rarely”.
• Only the -ως form survives in everyday speech: αμέσως “immediately”, ευτυχώς “fortunately”, δυστυχώς “unfortunately”.
• The two forms mean different things and you must keep them apart: ακριβά “expensively” vs ακριβώς “exactly”; άμεσα “directly” vs αμέσως “immediately”; απλά “in a simple way” vs απλώς “merely, just”.

Note that the -ως form does not keep the adjective’s stress, and it is not always stressed on the ending: ακριβώς, απλώς, τελικώς, ευτυχώς, δυστυχώς carry the accent on -ώς, but αμέσως (from άμεσος) and βεβαίως (from βέβαιος) keep it one syllable earlier.

3. The four types. Adverbs are grouped by the question they answer: πού; (place), πότε; (time), πώς; (manner), πόσο; (degree). The lists below are the A1 core.

4. Position. Degree adverbs stand before the word they modify: πολύ καλά, αρκετά μεγάλο, λίγο κουρασμένος. Manner adverbs normally come after the verb: Μιλάει καλά. Time and place adverbs are mobile — Σήμερα δουλεύω and Δουλεύω σήμερα are both fine; putting them first highlights them.

5. Comparison. Adverbs compare exactly like adjectives, but the comparative ends in -ότερα instead of -ότερος:

• analytic: πιο + adverb — πιο ωραία, πιο γρήγορα
• synthetic: adverb in -ότερα — ωραιότερα, γρηγορότερα
• elative (“very …”): πολύ + adverb, or the form in -ότατα — πολύ ωραία / ωραιότατα

“Than” is από + accusative: Τρέχει πιο γρήγορα από μένα.

A few high-frequency adverbs compare irregularly: καλά → καλύτερα, άσχημα → χειρότερα, πολύ → περισσότερο, λίγο → λιγότερο.

6. ποτέ and καθόλου need δεν. Greek uses double negation. A negative adverb does not negate the sentence by itself — the verb still carries δεν: Δεν πάω ποτέ. Δεν κάνει καθόλου κρύο.

Forms & patterns

Adjective → adverb. The adverb is identical to the neuter plural:

σιγά “slowly, softly” belongs here in meaning but is learnt as a ready-made word (the adjective is σιγανός).

The -α / -ως doublets:

The four types:

Comparison:

Examples

Common mistakes

• Μιλάει καλός. -> Μιλάει καλά. — A verb is modified by an adverb, not by an adjective; καλός would have to agree with a noun.
• Πώς είσαι; — Είμαι καλός. -> Είμαι καλά. — With είμαι, καλά means “fine, in good health”; Είναι καλός means “he is a good/kind person” — a statement about character, not about how he is doing.
• Είναι πολλή ωραία. -> Είναι πολύ ωραία. — Adverbial πολύ “very” never changes. πολλή is the feminine adjective “much” (πολλή δουλειά), a different word with a different spelling.
• Πηγαίνω ποτέ εκεί. -> Δεν πηγαίνω ποτέ εκεί. — ποτέ needs δεν on the verb; without it the sentence is not negative.
• Είναι καθόλου κρύο. -> Δεν είναι καθόλου κρύο. — Same rule: καθόλου “at all” only works under negation.
• Το εισιτήριο κοστίζει ακριβώς. -> Το εισιτήριο κοστίζει ακριβά. — ακριβώς means “exactly”; the manner adverb “expensively” is ακριβά.
• Τρέχει πιο γρηγορότερα. -> Τρέχει πιο γρήγορα. / Τρέχει γρηγορότερα. — Choose one comparative; never stack πιο on a form already in -ότερα.
• Είναι καλύτερα από εγώ. -> Είναι καλύτερα από μένα. — από takes the accusative, so the strong pronoun is μένα.

Tips

• One rule covers most of it: adjective in -ος → adverb in -α, spelled and stressed like the neuter plural. If you can say τα καλά παιδιά, you already know the adverb καλά.
• Keep the pair ακριβά / ακριβώς in your head as a warning label: the -ως form is not automatically “the same word, more formal”.
• πολύ (adverb, “very / a lot”) and πολλή (feminine adjective, “much”) sound alike but are spelled differently. If the word next to it is a verb, an adjective or another adverb, write πολύ.
• Learn ποτέ and καθόλου together with δεν, as chunks: δεν … ποτέ, δεν … καθόλου. That way you can’t drop the δεν.
• Degree adverbs stack naturally: πάρα πολύ καλά “extremely well”, λίγο πιο γρήγορα “a bit faster”.
• In speech the analytic comparative πιο + adverb is by far the commonest; -ότερα forms sound a touch more written, except for καλύτερα and χειρότερα, which are everyday.
• Watch out for the -α adverb that doubles as a neuter plural adjective: Τα ελληνικά είναι εύκολα (adjective, agreeing) vs Μαθαίνω εύκολα (adverb). The words are identical; only the sentence tells you which one it is.