Disinterest/dɪsˈɪntrəst/ Definition 1 of 2Pro Tip 1/3Non-Personal Interest Use 'disinterest' when describing neutrality without personal gain or bias. The judge showed disinterest when settling the dispute fairly. Pro Tip 2/3Emotionally Uninvolved Describe someone’s lack of emotional connection with 'disinterest'. Despite the uproar, she remained in disinterest. Pro Tip 3/3Neutral Behavior Indicate a person’s unconcerned behavior in specific situations. His disinterest during the debate was surprising.