say-so in WordNet English dictionary

1. the power or right to give orders or make decisions
   "he has the authority to issue warrants"; "deputies are given authorization to make arrests"; "a place of potency in the state"
   authority  authorization  authorisation  potency  dominance  say-so 
   
2. an authoritative declaration
   pronouncement  dictum  say-so 
   
3. one chap's arbitrary assertion
   say-so 
   

say-so in English Wiktionary