Akrodha (Sanskrit: अक्रोध) literally means "free from anger". It's an important virtue in Indian philosophy and Hindu ethics. Akrodha is a fusion word between the Sanskrit prefix a (Sanskrit: अ; "without", "non") and the term krodha (Sanskrit: क्रोध; "anger"), meaning "without anger". A related word is akrodhah (Sanskrit: अक्रोध), which also means "absence of anger". Akrodha is considered a virtue and desirable ethical value in Hinduism. When there is cause of anger but nevertheless there is absence of anger, this is non-anger or akrodha. Absence of anger (akrodha) means being calm even when insulted or rebuked, or despite great provocation. Akrodha does not mean absence of causes of anger, it means not getting angry and keeping an even, calm temper despite the circumstances. Krodha ("anger") is excessive mental turmoil on account of obstacles interfering with the gratification of some desire; it is manifestation of the quality of tamas (dark, negative, destructive), an undesirable psychological state. The opposite of krodha is akrodha: a productive, positive, and constructive state. states that akrodha is necessary for peace and happiness, which is a state of contentment (santustah) where there is absence of spite or envy (advestah), absence of anger (akrodhah), and absence of violence (ahimsa). Dharma relies on akrodha, because it creates an environment of serenity, a rational principle of life, and because it is a moral virtue inspired by love. According to Vedic sages, when work becomes akin to a yajna (a worship ceremony), the effect of that work is transformed into apurva, that is, it becomes something unique, unprecedented, and empowering. In contrast, anger clouds reason, which results in the loss of discrimination between right and wrong and virtue and vice. When the discriminating faculty is ruined, the person loses self-identity and the inner good perishes. With freedom from anger, a person reaches an apurva state. The Naradaparivrajaka Upanishad states the nature of akrodha for a person who seeks self-knowledge and liberation (kaivalya) as follows: All cruel words should be endured.