-εινός

Ancient Greek

From Proto-Hellenic *-eh-nos, from Proto-Indo-European *-es-, the oblique stem of the verbal noun suffix *-os + the adjectival suffix *-nós.

-εινός • (-einós) m (feminine -εινή, neuter -εινόν); first/second declension

Usually added to neuter nouns in -ος (-os) to form an adjective
‎κλέος (kléos, “fame”) + ‎-εινός (-einós) → ‎κλεινός (kleinós, “famous”)

First and second declension of -εινός; -εινή; -εινόν (Attic)

Number	Singular			Dual			Plural
Case/Gender	Masculine	Feminine	Neuter	Masculine	Feminine	Neuter	Masculine	Feminine	Neuter
Nominative	-εινός -einós	-εινή -einḗ	-εινόν -einón	-εινώ -einṓ	-εινᾱ́ -einā́	-εινώ -einṓ	-εινοί -einoí	-ειναί -einaí	-εινᾰ́ -einá
Genitive	-εινοῦ -einoû	-εινῆς -einês	-εινοῦ -einoû	-εινοῖν -einoîn	-ειναῖν -einaîn	-εινοῖν -einoîn	-εινῶν -einôn	-εινῶν -einôn	-εινῶν -einôn
Dative	-εινῷ -einôi	-εινῇ -einêi	-εινῷ -einôi	-εινοῖν -einoîn	-ειναῖν -einaîn	-εινοῖν -einoîn	-εινοῖς -einoîs	-ειναῖς -einaîs	-εινοῖς -einoîs
Accusative	-εινόν -einón	-εινήν -einḗn	-εινόν -einón	-εινώ -einṓ	-εινᾱ́ -einā́	-εινώ -einṓ	-εινούς -einoús	-εινᾱ́ς -einā́s	-εινᾰ́ -einá
Vocative	-εινέ -einé	-εινή -einḗ	-εινόν -einón	-εινώ -einṓ	-εινᾱ́ -einā́	-εινώ -einṓ	-εινοί -einoí	-ειναί -einaí	-εινᾰ́ -einá
Derived forms	Adverb			Comparative			Superlative
Derived forms	-εινῶς -einôs			-εινότερος -einóteros			-εινότᾰτος -einótatos
Notes:	This table gives Attic inflectional endings. For declension in other dialects, see Appendix:Ancient Greek dialectal declension.