abnegate /ˈabnɪɡeɪt 
/ ▸ verb [with object] formal renounce or reject (something desired or valuable): he attempts to abnegate personal responsibility.
– ORIGIN mid 16th century: from Latin abnegat- ‘renounced’, from the verb abnegare, from ab- ‘away, off’ + negare ‘deny’.
EnglishOxford Dictionary of English
