temporiser

/ˈtɛmpəˌraɪzər/
noun
  1. A person who delays making decisions or taking action, especially to gain time or avoid commitment.
    • He's a known temporiser, always asking for more time to think things over.
    • The committee was full of temporisers who refused to vote on the issue.
    • Don't be a temporiser; make up your mind and act.
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