φθίσις

Ancient Greek

From Proto-Hellenic *kʷʰtʰítis, from Proto-Indo-European *dʰgʷʰítis (“perishing, decrease”). Cognates include Sanskrit क्षिति (kṣíti, “perishing, downfall”) and Latin sitis (“thirst”). By surface analysis, φθίω (phthíō) +‎ -σις (-sis).

φθῐ́σῐς • (phthĭ́sĭs) f (genitive φθῐ́σεως); third declension

Third declension of ἡ φθῐ́σῐς; τῆς φθῐ́σεως (Attic)

Case / #	Singular	Dual	Plural
Nominative	ἡ φθῐ́σῐς hē phthĭ́sĭs	τὼ φθῐ́σει tṑ phthĭ́sei	αἱ φθῐ́σεις hai phthĭ́seis
Genitive	τῆς φθῐ́σεως tês phthĭ́seōs	τοῖν φθῐσέοιν toîn phthĭséoin	τῶν φθῐ́σεων tôn phthĭ́seōn
Dative	τῇ φθῐ́σει tēî phthĭ́sei	τοῖν φθῐσέοιν toîn phthĭséoin	ταῖς φθῐ́σεσῐ / φθῐ́σεσῐν taîs phthĭ́sesĭ(n)
Accusative	τὴν φθῐ́σῐν tḕn phthĭ́sĭn	τὼ φθῐ́σει tṑ phthĭ́sei	τᾱ̀ς φθῐ́σεις tā̀s phthĭ́seis
Vocative	φθῐ́σῐ phthĭ́sĭ	φθῐ́σει phthĭ́sei	φθῐ́σεις phthĭ́seis
Notes:	This table gives Attic inflectional endings. For declension in other dialects, see Appendix:Ancient Greek dialectal declension.