204 entries under slow topic. ×

2
inept(adjective, flat, careless, foolish)
2
lagging(adjective, careless, indifferent, idle)
2
long(adjective, loose, tedious, endless)
2
lower(verb, upset, reduce, discourage)
2
overlong
2
protracted(adjective, tedious, late, endless)
2
slow-moving(adjective, careless, indifferent, idle)
2
slumberous(noun, adjective, quiet, heavy)
2
trivial(adjective, simple, foolish, stupid)
2
unsuitable(adjective, flat, stupid, awkward)
1
abase(verb, upset, reduce, discourage)
1
afflict(verb, upset, trouble, reduce, disturb)
1
ail(verb, upset, trouble, reduce, disturb)
1
bear down(verb, expression, upset, trouble, reduce)
1
beat(verb, adjective, upset, trouble, reduce)
1
beat down(verb, expression, upset, reduce, disturb)
1
bother(verb, upset, trouble, reduce, disturb)
1
bug(verb, upset, trouble, reduce, disturb)
1
bum out(verb, expression, upset, trouble, reduce)
1
chill out(verb, expression, stop, fall, diminish)
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APASmart Define. (2016). dull thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/dull/thesaurus/synonyms
ChicagoSmart Define. 2016. "dull thesaurus" https://smartdefine.org/dull/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, dull thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/dull/thesaurus/synonyms>.
MLASmart Define. "dull thesaurus" 29 March 2016. Web. 26 September 2026. <https://smartdefine.org/dull/thesaurus/synonyms>