Letters that make sludge
s, d, e, g, l, u are letters that make 'sludge'
sludges is a word created by adding a letter to 'sludge'
2 possible definitions for 'sludge'
Under this definition, sludge is a noun and has the following properties:
'sludge' can be a type of matter.
sapropel is a type of sludge.
slimy, muck up, muck, slime, mud, mire, gooey, icky, mucky, muddy, slimed are derivatives of 'sludge'.
Under this definition, sludge is a noun and has the following properties:
'sludge' can be a type of precipitate.