1550s, "a disowning," from Latin abdicationem (nominative abdicatio) "renunciation, abdication," noun of action from past participle stem of abdicare (see abdicate); sense of "resignation of sovereignty" is from 1680s.
1. There had been a complete abdication of responsibility.
2. The officers took over and forced his abdication in 1947.
3. Abdication is precluded by the lack of a possible successor.
4. American abdication would tempt Soviet tendencies toward filling every vacuum.
5. This almost formal abdication of fatherhood hurt him.