Letters that make silt up
s, l, p, t, i, u are letters that make 'silt up'
1 possible definitions for 'silt up'
Under this definition, silt up is a verb and has the following properties:
silt has the same meaning as silt up
'silt up' can be a type of congest, choke, back up, choke off, foul, clog, clog up.
silt is a derivative of silt up.