Mental make-ups refer to the unique blend of beliefs, attitudes, and opinions that shape an individual's psyche. The antonyms for "mental make-ups" include detachment, indifference, impartiality, and neutrality. Detachment denotes a state of being aloof, detached, or disconnected from a situation. Indifference suggests a lack of interest, concern, or emotion. Impartiality refers to the quality of being unbiased, equitable, or just. Neutrality signals being neutral, without taking sides or showing favoritism. These antonyms represent a lack of personal investment or involvement in a situation and may be useful in situations where objectivity is required.