- a person's word, opinion, assurance, etc.: based solely on her say-so
- right of decision; authority: who has the say-so in such matters?
nounpl. say-sos Informal
- An unsupported statement or assurance: I'm not reporting him just on your say-so.
- An expression of permission or approval: If you want to borrow the bike, you have to get her say-so.
- The right or authority to decide: Do I have any say-so in this matter?
- (informal) Alternative spelling of say-so.
- We're just waiting on your sayso.
- Statement that something is so.
- I wouldn't buy anything that expensive just on the say-so of a saleman.
- The say-so of one small child is not enough to convict a man of murder in the absence of any other evidence.
- (informal) Permission.
- You are not to go into that room without my say-so.
- Say, voice (in a matter).
- I have to do it. I'm afraid I have no say-so in the matter.