86 entries under adjective topic. ×

17
formidable(tough, awful, terrible, fear)
13
dire(tough, difficult, awful, terrible)
10
fearful(tough, difficult, awful, terrible)
9
gruesome(awful, terrible, dreadful)
8
appalling(tough, difficult, awful, terrible)
8
terrible(tough, difficult, awful, fear)
8
ghastly(awful, terrible, fear, dreadful)
7
dreadful(tough, difficult, awful, terrible)
7
frightful(tough, difficult, awful, terrible)
7
horrible(tough, difficult, awful, terrible)
7
horrid
7
horrific(tough, difficult, awful, terrible)
6
direful
6
illustrious(respect, knowledge)
6
tremendous(tough, difficult, awful, terrible)
6
horrendous(awful, terrible, dreadful)
6
stalwart(strong, determined, vigorous, noble)
5
hideous(awful, terrible, dreadful)
5
notable(respect, knowledge)
5
respected(good, proper, ordinary, modest)
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APASmart Define. (2016). redoubtable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/redoubtable/thesaurus/synonyms
ChicagoSmart Define. 2016. "redoubtable thesaurus" https://smartdefine.org/redoubtable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, redoubtable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/redoubtable/thesaurus/synonyms>.
MLASmart Define. "redoubtable thesaurus" 2 March 2016. Web. 22 September 2026. <https://smartdefine.org/redoubtable/thesaurus/synonyms>