say

verb:to utter words so as to convey information, an opinion, or a feeling
- I would like to say something about the new proposal.
verb:to suppose or assume something as a basis for reasoning
- Let's say you win the lottery; what would you do first?
verb:to think or believe
- I say we should not go there after dark.
noun:a right or opportunity to express an opinion or to participate in a decision
- Everyone should have a say in the planning process.