58 entries under dull topic. ×

6
unprogressive(adjective, moderate, low, stupid)
5
belated(adjective, adverb, low, slow)
5
dilatory(adjective, slow, late, remiss)
5
half-witted(adjective, simple, ability, slow)
4
overdue(adjective, adverb, low, slow)
4
slack(adjective, low, slow, late)
4
thick(adjective, simple, slow, silly)
3
simple-minded(adjective, simple, ability, slow)
3
unintelligent(adjective, simple, slow, silly)
3
unpunctual(adjective, adverb, low, slow)
2
detained(adjective, moderate, low, stiff)
2
down(late, behind)
2
impeded(adjective, moderate, low, stiff)
2
lingering(adjective, moderate, low, slow)
2
stagnant(late, behind)
2
weak(simple, limited, spineless, gutless)
1
birdbrained(adjective, simple, slow, limited)
1
draggy(adjective, moderate, low, stiff)
1
hindered(adjective, moderate, low, stiff)
1
long-drawn-out(adjective, moderate, low, stiff)
10 years ago|18k views|share |citing 
APASmart Define. (2016). backward thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/backward/thesaurus/synonyms
ChicagoSmart Define. 2016. "backward thesaurus" https://smartdefine.org/backward/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, backward thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/backward/thesaurus/synonyms>.
MLASmart Define. "backward thesaurus" 23 March 2016. Web. 24 September 2026. <https://smartdefine.org/backward/thesaurus/synonyms>