𑀣𑀼𑀓𑁆𑀓𑀇

Prakrit

Onomatopoeic. Compare Sanskrit थूथू (thūthū), ष्ठ्यूत (ṣṭhyūta, “spit out, ejected; the act of spitting”, past participle; noun).

Perhaps borrowed from Dravidian, compare Gondi తుహ్కల్ (tuhkal), Telugu తుపుక్కు (tupukku).^[1]

𑀣𑀼𑀓𑁆𑀓𑀇 (thukkaï) (Devanagari थुक्कइ, Kannada ಥುಕ್ಕಇ) (ambitransitive) (attested in Māhārāṣṭrī)

Central Indo-Aryan:
- Hindustani:
  Hindi: थूकना (thūknā)
  
  Urdu: تُھوکْنَا (thūknā)
Eastern Indo-Aryan:
- Odia: ଥୁକିବା (thukibā)
Northern Indo-Aryan:
- Nepali: थुक्नु (thuknu)
Northwestern Indo-Aryan:
- Punjabi:
  Gurmukhi script: ਥੁੱਕਣਾ (thukkaṇā)
  
  Shahmukhi script: تُھکّݨا (thukkṇā)
- Sindhi: thukaṇu
  Arabic script: ٿُڪَڻُ
  
  Devanagari script: थुकणु
Southern Indo-Aryan:
- Old Marathi: thuṃkaṇe
  Devanagari script: थुंकणे
  
  Modi script: 𑘞𑘳𑘽𑘎𑘜𑘹
  - Marathi: थुंकणे (thuṅkṇe)
Western Indo-Aryan:
- Gujarati: થૂંકવું (thū̃kvũ)

Turner, Ralph Lilley (1969–1985), “thukkaï”, in A Comparative Dictionary of the Indo-Aryan Languages, London: Oxford University Press, page 347

^ Burrow, T.; Emeneau, M. B. (1984), “3323”, in A Dravidian etymological dictionary, 2nd edition, Oxford University Press, →ISBN.