Is your team so bad you have begun supporting a rival team? Then you're guilty of defection — the act of shifting your support to a new cause.

Most people won't thank you for your defection. No matter how much you might believe in the new sports team, or political party, or whatever, defection is generally used as a critical term. Defection implies a lack of character — as you can tell by looking at its Latin roots, which come from the word defectionum, meaning "desertion, revolt, failure." Clearly, no one likes a defector.

Definitions of defection

n withdrawing support or help despite allegiance or responsibility

abandonment, desertion
abscondment, decampment
the act of running away secretly (as to avoid arrest)
absence without leave, unauthorized absence
unauthorized military absence
ideological defection from the party line (especially from orthodox communism)
Type of:
the act of withdrawing

n the state of having rejected your religious beliefs or your political party or a cause (often in favor of opposing beliefs or causes)

apostasy, renunciation
Type of:
the state of being rejected

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