The story
- Proto-Indo-European · derived from*(s)ker-“to turn, bend”
- Proto-Germanic · derived from*hrunkijō
- Frankish · derived from*hrunkiju“a wrinkle”
- Old French · derived fromfroncir
- Middle English · inherited fromfrouncen
- English todayfrounce
From Middle English frouncen, from Old French froncir "to wrinkle, frown", from Frankish *hrunkiju (“a wrinkle”), from Proto-Germanic *hrunkijō, *hrunkitō (“fold, wrinkle”), from Proto-Indo-European *(s)ker- (“to turn, bend”). Akin to Old High German runza "fold, wrinkle, crease" (German Runzel "wrinkle"), Middle Dutch ronse "frown", Old Norse hrukka "wrinkle, crease" (Icelandic hrukka "wrinkle, crease, ruck"). More at ruck₂.
Words from the same roots
Proto-Germanic*hrunkijō all →
Proto-Indo-European*(s)ker- all →
Etymology from Wiktionary, CC BY-SA 4.0.