The Swedish term "teckna, skylt, underteckna, vink, signera" matches the English term "sign"

other swedish words that include "underteckna" : english :
underteckna undersign
inte undertecknad unsigned
other swedish words that include "signera" : english :
kontrasignera, lösen countersign
märka, märke, markera, signera, beteckna mark
signerad signed