insensitive

When you're insensitive, you're not feeling something. You can be insensitive to the weather or other people's problems.

This word has two meanings that are closely related. When your foot is asleep, it's insensitive or numb — you can't feel your friend poking at it. When you get really cold, you can become insensitive to pain. In the other sense, insensitive means the opposite of caring and sympathetic — you're insensitive to other people's feelings. If you make a joke about your friend's bad haircut when you know she's embarrassed about it, you're being insensitive.

Definitions of insensitive
1

adj deficient in human sensibility; not mentally or morally sensitive

insensitive to the needs of the patients”
Synonyms:
hard
dispassionate
unresponsive
not responding to some influence or stimulus
insensible
incapable of physical sensation
callous, indurate, pachydermatous
emotionally hardened
dead, numb
(followed by `to') not showing human feeling or sensitivity; unresponsive
dull
blunted in responsiveness or sensibility
insensible, unaffected
unaware of or indifferent to
soulless
lacking sensitivity or the capacity for deep feeling
thick-skinned, tough-skinned
insensitive to criticism
tough
not given to gentleness or sentimentality
Antonyms:
sensitive
being susceptible to the attitudes, feelings, or circumstances of others
responsive
readily reacting or replying to people or events or stimuli; showing emotion
alive
(followed by `to' or `of') aware of
feisty, huffy, thin-skinned, touchy
quick to take offense
oversensitive
unduly sensitive or thin-skinned
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adj not responsive to physical stimuli

insensitive to radiation”
Synonyms:
unresponsive
not responding to some influence or stimulus
insensible
incapable of physical sensation
dead, deadened
devoid of physical sensation; numb
unreactive
not tending to react to stimulation
insusceptible, unsusceptible
not susceptible to
Antonyms:
sensitive
responsive to physical stimuli
responsive
readily reacting or replying to people or events or stimuli; showing emotion
sensible, sensitive
able to feel or perceive
delicate
of an instrument or device; capable of registering minute differences or changes precisely
erogenous
sensitive to sexual stimulation
excitable, irritable
capable of responding to stimuli
highly sensitive
readily affected by various agents
irritable
abnormally sensitive to a stimulus
light-sensitive, photosensitive
sensitive to visible light
radiosensitive
sensitive to radiation
nociceptive
caused by or in response to pain
reactive, responsive
reacting to a stimulus
susceptible
(often followed by `of' or `to') yielding readily to or capable of
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