Etimology
From Middle English yes, from Old English ġīese (“by all means, of course, yes”), derived from the same root as yea.
interjection
yes
An exclamation of pleasure or approval, usually transcribed with an exclamation point.
Response that confirms that the user is paying attention.
(interrogative) Used to ask for more information with a request.
Examples
Antonym: no
Our second goal of the match! Yes!
I need some help.Yes?
noun
yes (plural yeses or yesses)
An affirmative expression; an answer that shows agreement or acceptance.
A vote of support or in favor/favour of something.
Examples
Synonyms: aye, yea, nod
Antonyms: no, nay
Was that a yes?
Synonyms: aye, yea
Antonym: nay
The workers voted on whether to strike, and there were thirty "yeses" and one "no".
verb
yes (third-person singular simple present yeses or yesses, present participle yessing, simple past and past participle yessed)
(colloquial, transitive) To agree with, affirm, approve.
(slang) To attempt to flatter someone by habitually agreeing
Examples
Synonyms: agree, consent, nod
Did he yes the veto?
"That's really what you wanted?" I yessed both; ...