term:

Abandon

abandon vt

1 : to give up with the intent of never again asserting or claiming an interest in (a right or property)
2 : to disassociate oneself from or forsake in spite of a duty or responsibility to [ one's child]
3 : to renounce one's obligations and rights under [ a contract]
4 : to fail purposely to bring to completion or fruition [ a crime] [ a lawsuit]

Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.