The Swedish term "gyttjig, inställsam, dyig" matches the English term "slimy"

other swedish words that include "inställsam" : english :
antydning, inställsam insinuating
inställsam obsequious
inställsam smarmy
smidig, inställsam supple
other swedish words that include "dyig" : english :
virrig, dyig, grumlig muddy