defect
04 2 2005
[defect]
to leave your own country or group in order to go to or join an opposing one
(LDOCE)
亡命する、離反するという意味ですね。
COBUILD では次のように出ています。
If you defect, you leave your country, political party, or other group, and join an opposing country, party, or group.
(COBUILD)
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