3.3. Interrogative pronouns
In Gothic, like in other German languages, inter pron-s are derived from the stem *xwa-, *xwō-, have masc (ƕas (who)), neut (ƕa (what)) and fem (ƕo (who)) gender and are used only in sing:
The form *ƕizos (fem, Gen) is not attested in the surviving Goth sources.
The inter pron ƕarjis (who; which) is also declined like strong adjectives.