Affirmative

YES

adverb, noun, plural yes·es, verb, yessed, yes·sing, interjection

–adverb

1.

(used to express affirmation or assent or to mark the addition of something emphasizing and amplifying a previous statement): Do you want that? Yes, I do.

2.

(used to express an emphatic contradiction of a previously negative statement or command): Don't do that! Oh, yes I will!

3.

(used, usually interrogatively, to express hesitation, uncertainty, curiosity, etc.): “Yes?” he said as he opened the door. That was a marvelous show! Yes?

–noun

5.

an affirmative reply.

–verb (used with object)

6.

to give an affirmative reply to; give assent or approval to.

–interjection

7.

(used as a strong expression of joy, pleasure, or approval.)

Origin:
before 900; Middle English yes, yis, Old English gēse (adv. and noun), probably equivalent to gēa yea + sī be it (present subjunctive singular of bēon to be)

APPARENTLY THIS IS AN IMAGE OF YES: