From Proto-Germanic *hwat, from Proto-Indo-European *kʷos, *kʷod. Cognates include Old Frisian hwet (West Frisian wat), Old Saxon hwat (Low German wat), Dutch wat, Old High German hwaz (German was), Old Norse hvat (Danish hvad, Swedish vad), Gothic 𐍈𐌰. The Indo-European root also led to the Latin quod, Lithuanian kàd, and Irish cad.
- English: what
- The status of hwæt in Old English, George Walkden