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Disinterested
Objectivity Important
Use 'disinterested' to describe fairness and lack of bias, especially in formal or professional contexts. 
Not Emotional Disinterest
'Disinterested' is not about a lack of emotion; it's about impartiality. 
Not Apathetic
Avoid confusing 'disinterested' with 'uninterested'; the former is neutral, not apathetic. 