From Ἀχαΐα (Akhaḯa, “Achaea”) + -ιος (-ios, adjective suffix). It is also attested as in the older forma Ἀχαιϝοί (Akhaiwoí), possibly coming via an intermediate form *Ἀχαϝyοί (*Akhawyoí).
Ἀχαιός • (Akhaiós) m (feminine Ἀχαιᾱ́, neuter Ἀχαιόν); first/second declension
Number | Singular | Dual | Plural | |||||||||||
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Case/Gender | Masculine | Feminine | Neuter | Masculine | Feminine | Neuter | Masculine | Feminine | Neuter | |||||
Nominative | Ἀχαιός Akhaiós |
Ἀχαιᾱ́ Akhaiā́ |
Ἀχαιόν Akhaión |
Ἀχαιώ Akhaiṓ |
Ἀχαιᾱ́ Akhaiā́ |
Ἀχαιώ Akhaiṓ |
Ἀχαιοί Akhaioí |
Ἀχαιαί Akhaiaí |
Ἀχαιᾰ́ Akhaiá | |||||
Genitive | Ἀχαιοῦ Akhaioû |
Ἀχαιᾶς Akhaiâs |
Ἀχαιοῦ Akhaioû |
Ἀχαιοῖν Akhaioîn |
Ἀχαιαῖν Akhaiaîn |
Ἀχαιοῖν Akhaioîn |
Ἀχαιῶν Akhaiôn |
Ἀχαιῶν Akhaiôn |
Ἀχαιῶν Akhaiôn | |||||
Dative | Ἀχαιῷ Akhaiôi |
Ἀχαιᾷ Akhaiâi |
Ἀχαιῷ Akhaiôi |
Ἀχαιοῖν Akhaioîn |
Ἀχαιαῖν Akhaiaîn |
Ἀχαιοῖν Akhaioîn |
Ἀχαιοῖς Akhaioîs |
Ἀχαιαῖς Akhaiaîs |
Ἀχαιοῖς Akhaioîs | |||||
Accusative | Ἀχαιόν Akhaión |
Ἀχαιᾱ́ν Akhaiā́n |
Ἀχαιόν Akhaión |
Ἀχαιώ Akhaiṓ |
Ἀχαιᾱ́ Akhaiā́ |
Ἀχαιώ Akhaiṓ |
Ἀχαιούς Akhaioús |
Ἀχαιᾱ́ς Akhaiā́s |
Ἀχαιᾰ́ Akhaiá | |||||
Vocative | Ἀχαιέ Akhaié |
Ἀχαιᾱ́ Akhaiā́ |
Ἀχαιόν Akhaión |
Ἀχαιώ Akhaiṓ |
Ἀχαιᾱ́ Akhaiā́ |
Ἀχαιώ Akhaiṓ |
Ἀχαιοί Akhaioí |
Ἀχαιαί Akhaiaí |
Ἀχαιᾰ́ Akhaiá | |||||
Derived forms | Adverb | Comparative | Superlative | |||||||||||
Ἀχαιῶς Akhaiôs |
Ἀχαιότερος Akhaióteros |
Ἀχαιότᾰτος Akhaiótatos | ||||||||||||
Notes: |
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Number | Singular | Dual | Plural | |||||||||||
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Case/Gender | Masculine | Feminine | Neuter | Masculine | Feminine | Neuter | Masculine | Feminine | Neuter | |||||
Nominative | Ἀχαιός Akhaiós |
Ἀχαιή Akhaiḗ |
Ἀχαιόν Akhaión |
Ἀχαιώ Akhaiṓ |
Ἀχαιᾱ́ Akhaiā́ |
Ἀχαιώ Akhaiṓ |
Ἀχαιοί Akhaioí |
Ἀχαιαί Akhaiaí |
Ἀχαιᾰ́ Akhaiá | |||||
Genitive | Ἀχαιοῦ / Ἀχαιοῖο / Ἀχαιόο Akhaioû / Akhaioîo / Akhaióo |
Ἀχαιῆς Akhaiês |
Ἀχαιοῦ / Ἀχαιοῖο / Ἀχαιόο Akhaioû / Akhaioîo / Akhaióo |
Ἀχαιοῖῐν Akhaioîin |
Ἀχαιαῖν / Ἀχαιαῖῐν / Ἀχαιῇῐν Akhaiaî(i)n / Akhaiêiin |
Ἀχαιοῖῐν Akhaioîin |
Ἀχαιῶν Akhaiôn |
Ἀχαιᾱ́ων / Ἀχαιέ͜ων / Ἀχαιῶν Akhaiā́ōn / Akhaié͜ōn / Akhaiôn |
Ἀχαιῶν Akhaiôn | |||||
Dative | Ἀχαιῷ Akhaiôi |
Ἀχαιῇ Akhaiêi |
Ἀχαιῷ Akhaiôi |
Ἀχαιοῖῐν Akhaioîin |
Ἀχαιαῖν / Ἀχαιαῖῐν / Ἀχαιῇῐν Akhaiaî(i)n / Akhaiêiin |
Ἀχαιοῖῐν Akhaioîin |
Ἀχαιοῖσῐ / Ἀχαιοῖσῐν / Ἀχαιοῖς Akhaioîsi(n) / Akhaioîs |
Ἀχαιῇσῐ / Ἀχαιῇσῐν / Ἀχαιῇς / Ἀχαιαῖς Akhaiêisi(n) / Akhaiêis / Akhaiaîs |
Ἀχαιοῖσῐ / Ἀχαιοῖσῐν / Ἀχαιοῖς Akhaioîsi(n) / Akhaioîs | |||||
Accusative | Ἀχαιόν Akhaión |
Ἀχαιήν Akhaiḗn |
Ἀχαιόν Akhaión |
Ἀχαιώ Akhaiṓ |
Ἀχαιᾱ́ Akhaiā́ |
Ἀχαιώ Akhaiṓ |
Ἀχαιούς Akhaioús |
Ἀχαιᾱ́ς Akhaiā́s |
Ἀχαιᾰ́ Akhaiá | |||||
Vocative | Ἀχαιέ Akhaié |
Ἀχαιή Akhaiḗ |
Ἀχαιόν Akhaión |
Ἀχαιώ Akhaiṓ |
Ἀχαιᾱ́ Akhaiā́ |
Ἀχαιώ Akhaiṓ |
Ἀχαιοί Akhaioí |
Ἀχαιαί Akhaiaí |
Ἀχαιᾰ́ Akhaiá | |||||
Derived forms | Adverb | Comparative | Superlative | |||||||||||
Ἀχαιῶς Akhaiôs |
Ἀχαιότερος Akhaióteros |
Ἀχαιότᾰτος Akhaiótatos | ||||||||||||
Notes: |
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Ἀχαιός • (Akhaiós) m (genitive Ἀχαιοῦ); second declension
Case / # | Singular | Dual | Plural | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Nominative | ὁ Ἀχαιός ho Akhaiós |
τὼ Ἀχαιώ tṑ Akhaiṓ |
οἱ Ἀχαιοί hoi Akhaioí | ||||||||||
Genitive | τοῦ Ἀχαιοῦ toû Akhaioû |
τοῖν Ἀχαιοῖν toîn Akhaioîn |
τῶν Ἀχαιῶν tôn Akhaiôn | ||||||||||
Dative | τῷ Ἀχαιῷ tôi Akhaiôi |
τοῖν Ἀχαιοῖν toîn Akhaioîn |
τοῖς Ἀχαιοῖς toîs Akhaioîs | ||||||||||
Accusative | τὸν Ἀχαιόν tòn Akhaión |
τὼ Ἀχαιώ tṑ Akhaiṓ |
τοὺς Ἀχαιούς toùs Akhaioús | ||||||||||
Vocative | Ἀχαιέ Akhaié |
Ἀχαιώ Akhaiṓ |
Ἀχαιοί Akhaioí | ||||||||||
Notes: |
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Case / # | Singular | Dual | Plural | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Nominative | Ἀχαιός Akhaiós |
Ἀχαιώ Akhaiṓ |
Ἀχαιοί Akhaioí | ||||||||||
Genitive | Ἀχαιοῦ / Ἀχαιοῖο / Ἀχαιόο Akhaioû / Akhaioîo / Akhaióo |
Ἀχαιοῖῐν Akhaioîin |
Ἀχαιῶν Akhaiôn | ||||||||||
Dative | Ἀχαιῷ Akhaiôi |
Ἀχαιοῖῐν Akhaioîin |
Ἀχαιοῖσῐ / Ἀχαιοῖσῐν / Ἀχαιοῖς Akhaioîsi(n) / Akhaioîs | ||||||||||
Accusative | Ἀχαιόν Akhaión |
Ἀχαιώ Akhaiṓ |
Ἀχαιούς Akhaioús | ||||||||||
Vocative | Ἀχαιέ Akhaié |
Ἀχαιώ Akhaiṓ |
Ἀχαιοί Akhaioí | ||||||||||
Notes: |
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