Synonyms|358Antonyms|61|Broader|0Narrower|0Related|262
1
desperate
1
despicably
1
deucedly
1
dire
1
direful
1
direfully
1
disconcertingly
1
discouragingly
1
dismayingly
1
distinctly(adverb, extremely)
1
distressingly
1
disturbingly
1
dolorously
1
dreadful
1
egregiously
1
eminently
1
enormously
1
especially
1
excessively
1
excruciatingly
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APASmart Define. (2015). frightfully thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/frightfully/thesaurus/synonyms
ChicagoSmart Define. 2015. "frightfully thesaurus" https://smartdefine.org/frightfully/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, frightfully thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/frightfully/thesaurus/synonyms>.
MLASmart Define. "frightfully thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/frightfully/thesaurus/synonyms>