insensitive
US /ɪnˈsen.sə.t̬ɪv/
UK /ɪnˈsen.sə.t̬ɪv/

1.
showing or feeling no concern for others' feelings
:
•
His comment about her weight was completely insensitive.
•
She was criticized for her insensitive remarks during the meeting.
2.
not affected by something
:
•
The plant is insensitive to changes in light.
•
The material is insensitive to high temperatures.