The noun apathy means the behavior that shows a lack of interest or unwillingness to take action.

Synonyms are dispassion, indifference, insensitivity, or lethargy.

The word origins from French (16th century) apathie meaning “freedom from suffering, passionless existence”, and from Latin apathia. It also comes from Greek apatheia meaning “freedom from suffering, impassibility, want of sensation”, from apathes meaning “without feeling, without suffering or having suffered”. It is derived from a- meaning “without” plus pathos meaning “emotion, feeling, suffering”. The sense of “indolence of mind, indifference to what should excite” is by 1733.

Members had apathy to not participate in the program.

They didn’t like the intern apathy towards work.

The apathy among a few kids in the park is reasonable.