122 entries under dull topic. ×

12
languorous(adjective, careless, indifferent, still)
12
shiftless(adjective, action, moving, careless)
12
torpid(adjective, calm, quiet, slow)
12
trifling(adjective, slight, careless, indifferent)
10
quiet(adjective, calm, easy, gentle)
10
slow(adjective, fail, diminish, decrease)
9
dead(adjective, quiet, cold, still)
9
lifeless(adjective, calm, quiet, gentle)
9
supine(adjective, quiet, easy, careless)
8
apathetic(adjective, quiet, careless, indifferent)
8
quiescent(adjective, calm, quiet, gentle)
8
sleepy(adjective, quiet, flat, careless)
8
static(adjective, calm, quiet, flat)
7
do-nothing(adjective, action, informal, sluggish)
7
immobile(adjective, calm, quiet, gentle)
7
inoperative(adjective, action, calm, weak)
6
asleep(adjective, calm, quiet, gentle)
6
dilatory(adjective, quiet, easy, careless)
5
fainéant(adjective, action, careless, indifferent)
5
indifferent(adjective, quiet, careless, weary)
10 years ago|30k views|share |citing 
APASmart Define. (2015). idle thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/idle/thesaurus/synonyms
ChicagoSmart Define. 2015. "idle thesaurus" https://smartdefine.org/idle/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, idle thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/idle/thesaurus/synonyms>.
MLASmart Define. "idle thesaurus" 23 October 2015. Web. 26 September 2026. <https://smartdefine.org/idle/thesaurus/synonyms>