186 entries under terrible topic. ×

1
bum(adjective, dirty, badly, scary)
1
cringe-worthy(adjective, dirty, badly, scary)
1
displeasing(adjective, dirty, badly, scary)
1
fierce(adjective, great, tough, awful, violent)
1
funereal(appearance, awful, grim, shocking)
1
galling(adjective, dirty, badly, scary)
1
implacable(adjective, appearance, violent, cruel)
1
mean(adjective, nasty, unpleasant, awful, violent)
1
merciless(adjective, appearance, violent, cruel)
1
noisome(adjective, dirty, badly, scary)
1
off putting(adjective, dirty, badly, scary)
1
overwhelming(great, tough, difficult, awful)
1
provoking(adjective, dirty, badly, scary)
1
relentless(adjective, appearance, violent, cruel)
1
ruthless(adjective, appearance, violent, cruel)
1
scandalous(adjective, evil, nasty, unpleasant, awful)
1
seamy(adjective, dirty, badly, scary)
1
spectral(awful, shocking, upsetting, frightening)
1
sticky(adjective, dirty, badly, scary)
1
truculent(adjective, appearance, violent, cruel)
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APASmart Define. (2016). frightful thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/frightful/thesaurus/synonyms
ChicagoSmart Define. 2016. "frightful thesaurus" https://smartdefine.org/frightful/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, frightful thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/frightful/thesaurus/synonyms>.
MLASmart Define. "frightful thesaurus" 29 March 2016. Web. 28 September 2026. <https://smartdefine.org/frightful/thesaurus/synonyms>