Synonyms for Clogged (same or very similar meaning)
WordNet sense 1 (thickened or coalesced in soft thick lumps (such as clogs or clots)):
clottedWordNet sense 2 (relatively dense in consistency):
thickWordNet sense 3 (stopped up; clogged up):
chokedWordNet sense 4 (shut off to passage or view or hindered from action):
obstructedWordNet sense 5 (loaded to excess or impeded by a heavy load):
encumberedFrom the ODE community, based on WordNetadd/edit