Adharma is the Sanskrit antonym of Dharma. It means 'that which is not in accord with the Dharma'. Connotations include unnaturalness, wrongness, evil, immorality, wickedness, or vice.
Adharma is derived from combining "a" with "dharma", which literally implies "not-dharma". It means immoral, sinful, wrong, wicked, unjust and against balance or nature.
Ariel Glucklich translates Adharma as chaos, disorder, non-harmonious and explains it as opposite of Dharma. Glucklich states that adharma is not understood as binary opposite or in absolute ethically negative term in Indian philosophy. Rather it is a complex functional subjective term just like dharma, with shades of meaning, that depends on circumstances, purpose and context.
Example via www.ramdass.org: Polishing Away the Anger