255 entries under adjective topic. ×

38
sluggish(dull, hard, weak, easy)
32
weighty(hard, difficult, heavy, complex)
30
oppressive(hard, difficult, heavy, complex)
29
ponderous(hard, difficult, heavy, complex)
29
dull(quiet, colour, severe, flat)
29
languorous(action, dull, hard, weak)
27
burdensome(hard, difficult, heavy, complex)
25
lumpish(hard, difficult, slow, complex)
25
plodding(hard, difficult, complex)
24
gray(noun, dull, gloomy, grim)
24
grey(dull, colour, lead, mousy)
24
massive(hard, difficult, heavy, complex)
24
sad(hard, difficult, complex)
22
stodgy(hard, difficult, complex)
21
grave(hard, difficult, gloomy, complex)
21
hefty(hard, difficult, complex)
20
heavy(dull, quiet, weak, easy)
19
backbreaking(hard, difficult, complex)
19
hard(difficult, complex)
19
laborious(hard, difficult, complex)
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APASmart Define. (2015). leaden thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/leaden/thesaurus/synonyms
ChicagoSmart Define. 2015. "leaden thesaurus" https://smartdefine.org/leaden/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, leaden thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/leaden/thesaurus/synonyms>.
MLASmart Define. "leaden thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/leaden/thesaurus/synonyms>