172 entries under adjective topic. ×

1
formal(tough, firm, fixed, distant)
1
hang tough(tough, sharp, difficult, wild)
1
hanging tough(expression, firm, determined, usual)
1
hard(tough, severe, sharp, firm)
1
hard-line(tough, severe, difficult, stiff)
1
hard as nails(expression, idiom, tough, firm)
1
headstrong(hard, tough, sharp, firm)
1
hold the fort(expression, idiom, tough, firm)
1
hold the line(expression, idiom, tough, firm)
1
immured(restrained, captive, confined, enclosed)
1
incompliant(tough, severe, firm, wild)
1
incurable(tough, difficult, wild, awkward)
1
indocile(tough, difficult, wild, awkward)
1
indomitable(tough, difficult, wild, awkward)
1
inelastic(tough, severe, firm, harsh)
1
inexorable(tough, severe, firm, harsh)
1
inflexible(severe, firm, steady, fixed)
1
insoluble(tough, difficult, wild, awkward)
1
intent(firm, determined, usual, regular)
1
intractable(tough, firm, difficult, determined)
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APASmart Define. (2013). locked in thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/locked_in/thesaurus/synonyms
ChicagoSmart Define. 2013. "locked in thesaurus" https://smartdefine.org/locked_in/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2013, locked in thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/locked_in/thesaurus/synonyms>.
MLASmart Define. "locked in thesaurus" 18 May 2013. Web. 28 September 2026. <https://smartdefine.org/locked_in/thesaurus/synonyms>