9
foul
7
congest(verb, block, pack, obstruct, fill)
6
choke
6
clog(verb, block, obstruct, seal, choke)
4
back up
4
choke off
4
stuff(verb, block, pack, obstruct, fill)
3
obstruct
2
fill(verb, block, pack, obstruct, squeeze)
2
jam(verb, block, pack, obstruct, fill)
2
pack(verb, block, obstruct, fill, squeeze)
1
bar
1
bind
1
block
1
blockade
1
caulk
1
chink
1
choke up(verb, expression, pack, fill, squeeze)
1
compress(verb, block, pack, obstruct, fill)
1
contaminate
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APASmart Define. (2015). clog up thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/clog_up/thesaurus/synonyms
ChicagoSmart Define. 2015. "clog up thesaurus" https://smartdefine.org/clog_up/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, clog up thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/clog_up/thesaurus/synonyms>.
MLASmart Define. "clog up thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/clog_up/thesaurus/synonyms>