Friska
Old Swedish Dictionary - friskaMeaning of Old Swedish word "friska" in Swedish.
As defined by K.F Söderwall's dictionary of Medieval Swedish:
Part of speech: vb
Grammatical aspect: v.
Alternative forms or notes:- *friska sik. Se Sdw 2: 1222.
Possible runic inscription in Medieval Futhork:ᚠᚱᛁᛋᚴᛆ
Medieval Runes were used in Sweden from 12th to 17th centuries.