Generally one speaks of ‘Krish’ meaning ‘to attract,’ and ‘Krish-na’ meaning ‘He who attracts all.’ The meaning of the Sanskrit roots is described in more detail by Srila Prabhupada in the purport to Srimad Bhagavatam 10.8.15 wherein he writes, “If we analyze the nirukti, or semantic derivation, of the word ‘Krsna,’ we find that na signifies that He stops the repetition of birth and death, and krs means sattartha, or ‘existence.’ (Krsna is the whole of existence.) Also, krs means ‘attraction,’ and na means ananda, or ‘bliss.’ Krsna is known as Mukunda because He wants to give everyone spiritual, eternal, blissful life.”