vadja

Estonian

Estonian Wikipedia has an article on:

Vadja keel

Wikipedia ^et

vadja (indeclinable)

Votic (of or relating to the people or culture of Votes)
vadja keel ― the Votic language

Indeclinable.

vad +‎ -ja (possessive suffix)

vadja

Inflection (stem in long/high vowel, back harmony)
	singular	plural
nominative	vadja	—
accusative	vadját	—
dative	vadjának	—
instrumental	vadjával	—
causal-final	vadjáért	—
translative	vadjává	—
terminative	vadjáig	—
essive-formal	vadjaként	—
essive-modal	vadjául	—
inessive	vadjában	—
superessive	vadján	—
adessive	vadjánál	—
illative	vadjába	—
sublative	vadjára	—
allative	vadjához	—
elative	vadjából	—
delative	vadjáról	—
ablative	vadjától	—
non-attributive possessive - singular	vadjáé	—
non-attributive possessive - plural	vadjáéi	—

vadja

(in the plural) Votes
(in the singular) Votic language
- 1936, V. I. Junus, Iƶoran Keelen Grammatikka‎^[1], Leningrad: Riikin Ucebno-pedagogiceskoi Izdateljstva, page 3:
  Naapurikeeliin, suomen, viron ja vadjan keeliin kera iƶoran keeli ono siottu oman strukturan, fonettisen, äänisostavan, kautta, mut iƶoran keeleel ono suur yhtehös i karjalan keelen kera.
  The Ingrian language is related to its neighbouring languages, Finnish, Estonian and Votic, through [its] own structure, that of phonetics, the inventory of sounds, but the Ingrian language has a strong connection with the Karelian language, too.

Declension of vadja (type 3/kana, no gradation)
	singular	plural
nominative	vadja	vadjat
genitive	vadjan	vadjoin
partitive	vadjaa	vadjoja
illative	vadjaa	vadjoi
inessive	vadjaas	vadjois
elative	vadjast	vadjoist
allative	vadjalle	vadjoille
adessive	vadjaal	vadjoil
ablative	vadjalt	vadjoilt
translative	vadjaks	vadjoiks
essive	vadjanna, vadjaan	vadjoinna, vadjoin
exessive¹⁾	vadjant	vadjoint
¹⁾ obsolete ^) the accusative* corresponds with either the genitive (sg) or nominative (pl) ^) the comitative** is formed by adding the suffix -ka^? or -kä^? to the genitive.