Water

Kurmancî: Av
Soranî: Aw
Kełhuřî: Aw
Luřî: Aw
Zazakî: Awe
Hewramî: Awî

Historical
Old Atropatene: Aw
New (Sassanian) Pahlawani: Ap
Avestan: Ap Median Cuneiform 𐎠𐎱
Hittite: Wātar Hittite Cuneiform 𒉿𒀀𒋻
Luwian: Wārsa Luwian Cuneiform 𒉿𒀀𒅈𒊭
Sumerian: A Sumerian Cuneiform 𒀀

Compare ‘River’ in Hittite: Hapaš (nominative, singular) Hittite Cuneiform 𒄩𒉺𒀸
Compare ‘River’ in Luwian: Hāpi Luwian Cuneiform 𒄩𒀀𒉿