Achyuta

Achyuta (, ) is a Sanskrit epithet used in Hindu traditions - especially Vaishnava devotional traditions - to signify the divine quality of being 'not fallen', 'infallible', or 'immutable'. The epithet is applied to Vishnu and to Krishna in various scriptural and devotional contexts.

It appears as the 100th and 318th names in the ''Vishnu Sahasranama''. It is also used frequently in the Bhagavad Gita as a personal name of Krishna. According to Adi Shankara's commentary on the 1000 names of Vishnu, Achyuta means 'one who will never lose his inherent nature and powers'. The name also means 'immovable' and 'unchangeable', and is applied to 'the one who is without the six transformations (beginning with birth).' Provided by Wikipedia