Antonyms for the word "affectibilities" are hardness, insensibility, and indifference. Hardness refers to a lack of emotional sensitivity, which makes it difficult to empathize with others. Insensibility pertains to the absence of sensation or feeling, rendering a person impervious to various emotional stimuli. Indifference is a state of apathy or disinterest, indicating a lack of concern or care towards others' emotions. These antonyms signify a lack of emotional responsiveness, and they illustrate the opposite of affectibilities, which imply a heightened capacity to understand, appreciate, and feel emotions.