What is the meaning of -ja?

You, ya.

Alternative form of a

Used to form agent nouns from verbs: -er

First infinitive marker.

Alternative form of -a

forms a tag question, requesting confirmation: right?

expresses complaint about the term it attaches to

-er; appended to verbal stems to form agent nouns, especially human ones

derives various adverbs

Forms agent nouns, especially human ones; -er

Romanization of -𐌾𐌰

Possessive (and genitive) suffix:

  1. his, her, its 

    his, her, its 

    -'s, of (third-person singular, single possession)

    -s’, of-s (third-person plural, single possession)

     ago (referring to a preceding point in time considered as an instant)

    for (referring to some duration that precedes the point of time in question)

    of …, out of

    Forms the definite third-person singular present tense of back-vowel verbs (with identical or different assimilation rules depending on the ending of the stem—see the tables below):

    1. in indicative mood

      in indicative mood

      in subjunctive (imperative) mood

      Alternative form of -a (feminine, plural, or singulative ending), used with stems ending in -i, -j.

      Alternative form of -i (1st-person singular non-verbal pronominal suffix), used with stems ending in vowels or diphthongs.

      Suffix appended to words to create a masculine noun, usually denoting a profession, performer or a feature, usually negative.

      Source: wiktionary.org