whiffler

/ˈwɪflər/
noun
  1. A person who is indecisive or frequently changes their opinions or loyalties.
    • In politics, a whiffler often switches parties to stay popular.
    • Don't be a whiffler; make up your mind and stick with it.
    • The committee couldn't rely on him because he was a known whiffler.
Antonyms
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