Hungarian Historical Phonology fekete
fekete 'black'
First attestation/Old Hungarian data
Feketeu
see UEW
Important dialectal forms
feteke
Uralic/Ugric/Pre-Hungarian reconstruction
(Disputed:)
UEW: PU *pȣ̈kkɜ-ttɜ ‘black; Schwartz‘
Status of the Ugric etymology
Irregular
Loan etymology
None suggested so far
Cognates suggested in earlier research
Khanty: East (V) pĕγtə, South (DN) pĕγtə, North (O) puti 'black' < PKh ?
Commentary
The etymology is completely irregular, and not even a Proto-Khanty word can be reconstructed. Hungarian e points to earlier *ä.
The Hungarian and Khanty words are problably somehow connected, but they cannot be derived from a Proto-Ugric source.
Conclusion
No Proto-Ugric word can be reconstructed.
References
EWUng
UEW s.v. pȣ̈kkɜ-ttɜ: PUg Uralonet