noun

 

a positive reaction or agreement with something

Was that a yes or a no?

 

exclamation

 

agree used to agree with something, or to give a positive answer to something

"Can I borrow your pencil?" "Yes, of course."

 

answer used as an answer when someone calls you

"Jack!" "Yes?"

 

disagree used to disagree with a negative announcement

"He's not here yet." "Yes he is, I've just seen him."