14 entries under laboriously topic. ×

14
dully(adverb, boring, seriously, deeply, slowly)
11
tediously(adverb, boring, seriously, deeply, slowly)
8
weightily(adverb, seriously, deeply, slowly)
7
gloomily(adverb, seriously, deeply, slowly)
7
profoundly(adverb, seriously, intensely, strongly, deeply)
6
ponderously
6
thickly(adverb, seriously, deeply, slowly)
5
densely(adverb, seriously, deeply, slowly)
5
sluggishly(adverb, seriously, deeply, slowly)
4
arduously(adverb, easy, strenuously)
4
massively(adverb, seriously, deeply, slowly)
3
dejectedly(adverb, seriously, deeply, slowly)
3
wearily(adverb, seriously, deeply, slowly)
0
tiringly(adverb, slowly, strenuously)
10 years ago|13k views|share |citing 
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>