- Definitions|2
- Thesaurus|169
- Abbreviations|0
| pertinaciously(adverb, obstinately) | |
| pigheadedly(adverb, firmly, determinedly, fixedly, obstinately) | |
| precisely | |
| strictly | |
| tenaciously(adverb, obstinately) | |
| toughly | |
| uncompromisingly | |
| unwaveringly(adverb, definitely, resolutely, determinedly, obstinately) | |
| austerely | |
| certainly | |
| contrarily(adverb, obstinately) | |
| contumaciously | |
| decidedly | |
| earnestly | |
| grimly | |
| hammer and tongs(expression, idiom) | |
| harshly | |
| heart and soul(expression, idiom) | |
| immutably | |
| impenitently |
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| APA | Smart Define. (2015). inflexibly thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/inflexibly/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "inflexibly thesaurus" https://smartdefine.org/inflexibly/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, inflexibly thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/inflexibly/thesaurus/synonyms>. |
| MLA | Smart Define. "inflexibly thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/inflexibly/thesaurus/synonyms> |