Exact Match:
- hardened
- converted to solid form (as concrete)
- protected against attack (especially by nuclear weapons); "hardened missile silos"
Synonyms:
- Philistine,
- acclimated,
- acclimatized,
- accommodated,
- accustomed,
- adapted,
- adjusted,
- annealed,
- backed,
- brazen,
- calcified,
- callous,
- calloused,
- case-hardened,
- cold,
- cold of heart,
- coldblooded,
- coldhearted,
- conditioned,
- conscienceless,
- crusted,
- crusty,
- crystallized,
- experienced,
- familiarized,
- flinthearted,
- flinty,
- fossilized,
- granulated,
- hard,
- hard of heart,
- hard-boiled,
- hardhearted,
- heartless,
- hornified,
- impenitent,
- impervious,
- incrusted,
- indurate,
- indurated,
- insensitive,
- insolent,
- inured,
- lapidified,
- lost to shame,
- naturalized,
- obdurate,
- orientated,
- oriented,
- ossified,
- pachydermatous,
- petrified,
- proof against,
- reinforced,
- rigidified,
- run-in,
- sclerotic,
- seared,
- seasoned,
- set,
- shameless,
- solidified,
- steeled,
- steeled against,
- steely,
- stiffened,
- stony,
- stonyhearted,
- strengthened,
- tempered,
- thick-skinned,
- toughened,
- trained,
- unabject,
- unblushing,
- uncompassionate,
- uncontrite,
- unemotional,
- unfeeling,
- unmelted,
- unmerciful,
- unnatural,
- unrepentant,
- unrepenting,
- unresponsive,
- unsoftened,
- untouched,
- used to,
- vitrified,
- wont,
- wonted