Synonyms for Renounce (same or very similar meaning)
WordNet sense 1 (give up, such as power, as of monarchs and emperors, or duties and obligations):
abdicate
WordNet sense 2 (leave (a job, post, or position) voluntarily):
resign, vacate, resign, give up
WordNet sense 3 (turn away from; give up):
quit, relinquish, foreswear
WordNet sense 4 (cast off or disown):
repudiate
From the ODE community, based on WordNet
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