callous (v.)
callous (adj.)
- apathetic
- asleep
- backed
- benumbed
- brazen
- calloused
- case-hardened
- cold
- coldhearted
- conscienceless
- crusted
- crusty
- crystallized
- dead
- deadened
- dull
- firm
- flinty
- fossilized
- granulated
- hard
- hard-boiled
- hard-nosed
- hardened
- hardhearted
- heartless
- impenitent
- impervious
- indifferent
- indurate
- insensate
- insensible
- insensitive
- insentient
- insolent
- inured
- numb
- numbed
- obdurate
- obtuse
- ossified
- pachydermatous
- reinforced
- sclerotic
- seared
- set
- shameless
- solidified
- steely
- stony
- stonyhearted
- strengthened
- thick-skinned
- tough
- toughened
- unblushing
- uncaring
- uncompassionate
- unemotional
- unfeeling
- unmelted
- unmerciful
- unnatural
- unperceptive
- unrepentant
- unresponsive
- unsympathetic
- untouched
- vitrified
