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Noun: say-so  sey sow
  1. One chap's arbitrary assertion
  2. An authoritative declaration
    - pronouncement, dictum
  3. The power or right to give orders or make decisions
    "he has the say-so to issue warrants";
    - authority, authorization, authorisation [Brit], potency, dominance

Derived forms: say-sos

Type of: affirmation, assertion, control, declaration, statement