Exact Match:
- hard core
- the most dedicated and intensely loyal nucleus of a group or movement
Synonyms:
- adamant,
- adamantine,
- ardent,
- cast-iron,
- dour,
- fanatic,
- fiery,
- firm,
- flaming,
- flinty,
- grim,
- hard,
- heated,
- hot,
- hotheaded,
- immovable,
- immutable,
- implacable,
- impliable,
- inelastic,
- inexorable,
- inflamed,
- inflexible,
- intransigent,
- iron,
- irreconcilable,
- madcap,
- passionate,
- red-hot,
- relentless,
- rigid,
- rigorous,
- rock-ribbed,
- scorching,
- steely,
- stern,
- stiff,
- totally committed,
- unaffected,
- unalterable,
- unbending,
- unchangeable,
- uncompromising,
- ungiving,
- unmoved,
- unrelenting,
- unyielding,
- white-hot,
- zealous