Daze
Middle English: back-formation from dazed, from Old Norse dasathr ‘weary’; compare with Swedish dasa ‘lie idle’.
wiktionary
Middle English, back-formation from dazed, perhaps ultimately from Old Norse *dasa, dasathr. Compare dasask(“to become weary”), with reflexive suffix -sk, Swedish dasa(“lie idly”), and Icelandic dasask(“to make weary with cold”).
Alternatively from Middle Dutch dasen(“act silly”).
etymonline
daze (v.)
late 14c., dasen, "be stunned; make bewildered," perhaps from Old Norse *dasa (compare dasask "to become weary," with reflexive suffix -sk). Or perhaps from Middle Dutch dasen "act silly." Perhaps originally "to make weary with cold" (a sense in English from c. 1400), which is the sense of Icelandic dasask (from the Old Norse word). Related: Dazed.
daze (n.)
"a dazed condition, state of being stunned or confused," 1825, from daze (v.).
