Synonyms|358Antonyms|61|Broader|0Narrower|0Related|262
11
terribly(adverb, greatness, very)
8
awfully
4
dreadfully(adverb, greatness)
4
extremely
4
horribly(adverb, greatness)
3
fearfully(adverb, greatness)
3
very
3
abominably
3
bitterly
3
cruelly(adverb, greatness)
3
deadly
3
horridly
3
horrifically
3
tremendously
3
appallingly
3
forbiddingly
3
grievously(adverb, greatness)
3
gruesomely
3
lamentably
3
painfully(adverb, greatness)
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APASmart Define. (2015). frightfully thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/frightfully/thesaurus/synonyms
ChicagoSmart Define. 2015. "frightfully thesaurus" https://smartdefine.org/frightfully/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, frightfully thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/frightfully/thesaurus/synonyms>.
MLASmart Define. "frightfully thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/frightfully/thesaurus/synonyms>