𑀚𑀺𑀝𑁆𑀞𑀸𑀡𑀻

Prakrit

Inherited from Sanskrit ज्येष्ठ (jyeṣṭha, “eldest”) +‎ जानि (jāni, “wife”).

𑀚𑀺𑀝𑁆𑀞𑀸𑀡𑀻 (jiṭṭhāṇī) f (Devanagari जिट्ठाणी, Kannada ಜಿಟ್ಠಾಣೀ) (attested in Jain Māhārāṣṭrī)

Maharastri declension of 𑀚𑀺𑀝𑁆𑀞𑀸𑀡𑀻 (feminine)
	singular	plural
Nominative	𑀚𑀺𑀝𑁆𑀞𑀸𑀡𑀻 (jiṭṭhāṇī)	𑀚𑀺𑀝𑁆𑀞𑀸𑀡𑀻𑀑 (jiṭṭhāṇīo) or 𑀚𑀺𑀝𑁆𑀞𑀸𑀡𑀻 (jiṭṭhāṇī)
Accusative	𑀚𑀺𑀝𑁆𑀞𑀸𑀡𑀺𑀁 (jiṭṭhāṇiṃ)	𑀚𑀺𑀝𑁆𑀞𑀸𑀡𑀻𑀑 (jiṭṭhāṇīo) or 𑀚𑀺𑀝𑁆𑀞𑀸𑀡𑀻 (jiṭṭhāṇī)
Instrumental	𑀚𑀺𑀝𑁆𑀞𑀸𑀡𑀻𑀏 (jiṭṭhāṇīe)	𑀚𑀺𑀝𑁆𑀞𑀸𑀡𑀻𑀳𑀺 (jiṭṭhāṇīhi) or 𑀚𑀺𑀝𑁆𑀞𑀸𑀡𑀻𑀳𑀺𑀁 (jiṭṭhāṇīhiṃ)
Dative	—	—
Ablative	𑀚𑀺𑀝𑁆𑀞𑀸𑀡𑀻𑀑 (jiṭṭhāṇīo)	𑀚𑀺𑀝𑁆𑀞𑀸𑀡𑀻𑀳𑀺𑀁𑀢𑁄 (jiṭṭhāṇīhiṃto)
Genitive	𑀚𑀺𑀝𑁆𑀞𑀸𑀡𑀻𑀏 (jiṭṭhāṇīe)	𑀚𑀺𑀝𑁆𑀞𑀸𑀡𑀻𑀡 (jiṭṭhāṇīṇa) or 𑀚𑀺𑀝𑁆𑀞𑀸𑀡𑀻𑀡𑀁 (jiṭṭhāṇīṇaṃ)
Locative	𑀚𑀺𑀝𑁆𑀞𑀸𑀡𑀻𑀏 (jiṭṭhāṇīe)	𑀚𑀺𑀝𑁆𑀞𑀸𑀡𑀻𑀲𑀼 (jiṭṭhāṇīsu) or 𑀚𑀺𑀝𑁆𑀞𑀸𑀡𑀻𑀲𑀼𑀁 (jiṭṭhāṇīsuṃ)
Vocative	𑀚𑀺𑀝𑁆𑀞𑀸𑀡𑀺 (jiṭṭhāṇi) or 𑀚𑀺𑀝𑁆𑀞𑀸𑀡𑀻 (jiṭṭhāṇī)	𑀚𑀺𑀝𑁆𑀞𑀸𑀡𑀻𑀑 (jiṭṭhāṇīo) or 𑀚𑀺𑀝𑁆𑀞𑀸𑀡𑀻 (jiṭṭhāṇī)

Descendants with Middle Indo-Aryan -𑀇𑀓𑀸- (-ikā-)

Central:
- Hindustani:
  Hindi: जिठानी (jiṭhānī), जेठानी (jeṭhānī)
  
  Urdu: جِٹھانی (jiṭhānī), جیٹھانی (jeṭhānī)
Northern:
- Nepali: जेठानी (jeṭhānī)
Northwestern:
- Punjabi:
  Gurmukhi script: ਜਿਠਾਣੀ (jiṭhāṇī), ਜਠਾਣੀ (jaṭhāṇī)
  
  Shahmukhi script: جِٹھاݨی (jiṭhāṇī)

Sheth, Hargovind Das T[rikamcand] (1923–1928) “जिट्ठाणी”, in पाइअ-सद्द-महण्णवो [pāia-sadda-mahaṇṇavo, Ocean of Prakrit words] (in Hindi), Calcutta: [Published by the Author], page 356.
Turner, Ralph Lilley (1969–1985) “jiṭṭhāṇī”, in A Comparative Dictionary of the Indo-Aryan Languages, London: Oxford University Press, page 291