151 entries under adjective topic. ×

1
rigorous(strong, hard, tough, severe)
1
rough(strong, hard, tough, severe)
1
severe(strong, hard, tough, harsh)
1
stiff
1
stony
1
strict(strong, hard, tough, severe)
1
tough-nut(hard, tough, difficult, wild)
1
unappeasable(determined, resolute, uncompromising, unshakeable)
1
unchangeable
1
undaunted
1
unflinching
1
unforgiving(determined, resolute, uncompromising, unshakeable)
1
unshakeable
1
unsparing(strong, hard, tough, severe)
1
valiant
1
zealous
0
cruel(strong, hard, tough, severe)
0
dense(strong, hard, tough, stupid)
0
ferric(strong, hard, tough, sturdy)
0
ferrous(strong, hard, tough, sturdy)
11 years ago|3.8k views|share |citing 
APASmart Define. (2015). bullheaded thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/bullheaded/thesaurus/synonyms
ChicagoSmart Define. 2015. "bullheaded thesaurus" https://smartdefine.org/bullheaded/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, bullheaded thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/bullheaded/thesaurus/synonyms>.
MLASmart Define. "bullheaded thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/bullheaded/thesaurus/synonyms>