Synonyms: insensitive
Definition: not responsive to physical stimuli
Usage: insensitive to radiation
Definition: devoid of physical sensation; numb
Usage: his gums were dead from the novocain; she felt no discomfort as the dentist drilled her deadened tooth; a public desensitized by continuous television coverage of atrocities
Similar words: unreactive
Definition: not tending to react to stimulation
Synonyms: insensitive
Definition: deficient in human sensibility; not mentally or morally sensitive
Usage: insensitive to the needs of the patients
Similar words: indurate, pachydermatous, callous
Definition: emotionally hardened
Usage: a callous indifference to suffering; cold-blooded and indurate to public opinion
Definition: (followed by `to') not showing human feeling or sensitivity; unresponsive
Usage: passersby were dead to our plea for help; numb to the cries for mercy
Similar words: dull
Definition: blunted in responsiveness or sensibility
Usage: a dull gaze; so exhausted she was dull to what went on about her- Willa Cather
Similar words: insensible, unaffected
Definition: unaware of or indifferent to
Usage: insensible to the suffering around him
Similar words: soulless
Definition: lacking sensitivity or the capacity for deep feeling
Similar words: tough-skinned, thick-skinned
Definition: insensitive to criticism