49 entries under seriously topic. ×

14
dully(adverb, boring, deeply, slowly)
11
tediously(adverb, boring, deeply, slowly)
8
weightily(adverb, deeply, slowly, laboriously)
7
gloomily(adverb, deeply, slowly, laboriously)
7
profoundly(adverb, intensely, strongly, deeply)
6
thickly(adverb, deeply, slowly, laboriously)
5
densely(adverb, deeply, slowly, laboriously)
5
intensely(adverb, fast, sprightly, severely)
5
severely(adverb, fast, sprightly, intensely)
5
sluggishly(adverb, deeply, slowly, laboriously)
4
laboriously(adverb, easy, deeply, slowly)
4
massively(adverb, deeply, slowly, laboriously)
3
dejectedly(adverb, deeply, slowly, laboriously)
3
forcibly(adverb, fast, sprightly, severely)
3
strongly(adverb, fast, sprightly, severely)
3
wearily(adverb, deeply, slowly, laboriously)
2
actively(adverb, fast, sprightly, severely)
2
painfully(adverb, fast, sprightly, severely)
2
powerfully(adverb, fast, sprightly, severely)
2
roughly(adverb, fast, sprightly, severely)
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APASmart Define. (2016). heavily thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/heavily/thesaurus/synonyms
ChicagoSmart Define. 2016. "heavily thesaurus" https://smartdefine.org/heavily/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, heavily thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/heavily/thesaurus/synonyms>.
MLASmart Define. "heavily thesaurus" 30 March 2016. Web. 29 September 2026. <https://smartdefine.org/heavily/thesaurus/synonyms>