disinterest
noun /dɪsˈɪntrəst/,  /dɪsˈɪntrest/
  /dɪsˈɪntrəst/,  /dɪsˈɪntrest/
[uncountable]- disinterest (in something) lack of interest- His total disinterest in money puzzled his family.
 
- the fact of not being involved in something and therefore able to be fair- She makes all her judgements with scientific disinterest.