[syn: apostasy, renunciation, defection]
The Collaborative International Dictionary of English v.0.48:
Defection \De*fec"tion\, n. [L. defectio: cf. F. d['e]fection.
See Defect.]
Act of abandoning a person or cause to which one is bound by
allegiance or duty, or to which one has attached himself;
desertion; failure in duty; a falling away; apostasy;
backsliding. "Defection and falling away from God." --Sir W.
Raleigh.
[1913 Webster]
The general defection of the whole realm. --Sir J.
Davies.
[1913 Webster]
WordNet (r) 3.0 (2006):
defection
n 1: withdrawing support or help despite allegiance or
responsibility; "his abandonment of his wife and children
left them penniless" [syn: desertion, abandonment,
defection]
2: the state of having rejected your religious beliefs or your
political party or a cause (often in favor of opposing
beliefs or causes) [syn: apostasy, renunciation,
defection]