13
crazily(adverb, intensely, fiercely, wildly, furiously)
13
madly
9
dementedly(adverb, intensely, fiercely, wildly)
5
wildly(adverb, intensely, fiercely, crazily)
4
deadly
4
deliriously(adverb, intensely, fiercely, wildly)
4
foolishly(adverb, intensely, fiercely, wildly)
4
frantically(adverb, intensely, fiercely, wildly)
4
furiously(adverb, intensely, fiercely, wildly, crazily)
3
deucedly
3
fiercely(adverb, intensely, wildly, crazily)
3
hysterically(adverb, intensely, fiercely, wildly)
3
irrationally(adverb, intensely, fiercely, wildly)
3
psychotically(adverb, intensely, fiercely, wildly)
2
daftly
2
devilish
2
devilishly
2
diabolically
2
fiendishly
2
franticly
<123458>
11 years ago|3.2k views|share |citing 
APASmart Define. (2015). insanely thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/insanely/thesaurus/synonyms
ChicagoSmart Define. 2015. "insanely thesaurus" https://smartdefine.org/insanely/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, insanely thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/insanely/thesaurus/synonyms>.
MLASmart Define. "insanely thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/insanely/thesaurus/synonyms>