The Swedish term "upplysa, lätta, blixtra, tändare" matches the English term "lighten"

other swedish words that include "upplysa" : english :
upplysa, ljusna, klarna brighten
upplysa enlighten
upplysa, eklärera, illuminerad illuminate
other swedish words that include "blixtra" : english :
ljunga, blixt, blixtra flash