Disavowment is a related term of relinquishment.
As nouns the difference between disavowment and relinquishment
is that disavowment is disavowal while relinquishment is the act of relinquishing something.
relinquishment
English
Noun
(
en noun)
The act of relinquishing something.
Synonyms
* abandonment
* cession
* renunciation
* surrender