Letters that make clog up
o, g, l, p, c, u are letters that make 'clog up'
1 possible definitions for 'clog up'
Under this definition, clog up is a verb and has the following properties:
unclog has the opposite meaning of clog up
'clog up' can be a type of obstruct, obturate, impede, occlude, close up, jam, block.
gum up, crap up, choke up, silt up, lug, stuff, silt, block are types of 'clog up'.
clog, congestion, congestive, backup, over-crowding are derivatives of 'clog up'.