1
fearsomely
1
foolishly
1
for a fact(expression, absolutely, really, positively, certainly)
1
fucking
1
grim
1
grimly
1
grotesquely
1
hellish
1
highly(very, really, seriously, beastly, enormously)
1
horrendously
1
horrifically
1
horrifyingly
1
hugely(adverb, well, very, greatly, beastly)
1
immoderately(adverb, very, endlessly, enormously, drastically)
1
improbably
1
in spades(expression, absolutely, really, positively, certainly)
1
inordinately(adverb, very, endlessly, enormously, drastically)
1
massively
1
merrily
1
mightily
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APASmart Define. (2015). terrifically thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/terrifically/thesaurus/synonyms
ChicagoSmart Define. 2015. "terrifically thesaurus" https://smartdefine.org/terrifically/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, terrifically thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/terrifically/thesaurus/synonyms>.
MLASmart Define. "terrifically thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/terrifically/thesaurus/synonyms>