The Hittite word ua-a-tar
Word ua-a-tar
IPA u̯ātar
Meaning water
See also Homeric Greek: ὕδωρ ‘water’
Phrygian: ΥΔΩΡ ‘water’
Armenian: jowr ‘water’
Proto-Indo-European: *wódr̥/wudr̥ ‘water’
Tocharian B: war ‘water’
Old Norse: vatn ‘water’
Hittite: wa-a-tar ‘water’
C. Luwian: wa-a-ar-ša ‘water’

Other words that might be of interest
lu-li-iš ‘pond, lake, spring, well, basin’, a-ru-na- ‘sea’, e-kan ‘cold, frost, ice’, ḫe-e-u- ‘rain’, du-u-ur ‘urine’, še-e-ḫur ‘urine’, ḫa-pa-aš ‘river’