noun
indifference
in-DIF-runss/ɪnˈdɪfrəns/
Absence of interest, concern, or preference.
The customer's indifference contrasts with the assistant's enthusiastic presentation of the mugs.

Etymology
The underlying idea is a lack of difference: neither option stands apart as preferable. A word for neutrality or impartiality developed into one for apathy and lack of concern.
In context
sovereign indifference coldness and scorn yet they persevered
More examples
- He expresses indifference about which restaurant we choose.
- She shrugs with indifference when I mention the new rules.
- His apparent indifference hides how much he actually cares.
Forms
indifferent adjective — Showing no interest, concern, or preference.
Similar words
- apathy
- Suggests a broader lack of motivation or emotional response.
- unconcern
- Emphasizes freedom from worry rather than lack of interest.
- nonchalance
- Describes a casually calm manner, sometimes hiding real interest.