Borrowed fromDanishHaffredall, originallyderived fromOld DanishHawærydh. The original being acompound ofhave(“pasture”) +‎ryd(“clearing”).^[1]

Then shortened to"Haverda", via the parish dialect to"Haverd", plus the added plural suffix-a (For unkown reason many place-names are in plural form, despite often referring to a single feature.^[2]).^[1]

"Haverda" was then, viafolk etymology, transformed to its contemporary form"Haverdal"; wheredal means "dale" or "valley".^[1]

The original formHawærydh is first attested in 1466.^[1] Thedal(“dale”) form is attested since 1603 asHaffredall.^[1]

Haverdal n (genitiveHaverdals)

1. Atown inHarplinge district,Halmstad municipality,Halland county,Sweden.