- Definitions|1
- Thesaurus|229
- Abbreviations|0
23 entries under persistent topic. ×
| stiff-necked(adjective, constant, pitiless, unyielding) | |
| tenacious(adjective, constant, pitiless, unyielding) | |
| bound(adjective, constant, pitiless, unyielding) | |
| bound and determined(expression, adjective, idiom, constant) | |
| ceaseless(adjective, constant, pitiless, unyielding) | |
| constant(adjective, pitiless, unyielding, endless) | |
| continual(adjective, constant, pitiless, unyielding) | |
| continuous(adjective, constant, pitiless, unyielding) | |
| endless(adjective, constant, pitiless, unyielding) | |
| hanging tough(expression, adjective, constant, pitiless) | |
| incessant(adjective, constant, pitiless, unyielding) | |
| intransigent(adjective, constant, pitiless, unyielding) | |
| iron-fisted(adjective, constant, pitiless, unyielding) | |
| merciless(adjective, constant, pitiless, unyielding) | |
| perpetual(adjective, constant, pitiless, unyielding) | |
| remorseless(adjective, constant, pitiless, unyielding) | |
| steady(adjective, constant, pitiless, unyielding) | |
| unabated(adjective, constant, pitiless, unyielding) | |
| unbending(adjective, constant, pitiless, unyielding) | |
| unbroken(adjective, constant, pitiless, unyielding) |
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| APA | Smart Define. (2015). hard-headed thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/hard-headed/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "hard-headed thesaurus" https://smartdefine.org/hard-headed/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, hard-headed thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/hard-headed/thesaurus/synonyms>. |
| MLA | Smart Define. "hard-headed thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/hard-headed/thesaurus/synonyms> |