yes
Pronunciation: /jɛs/
exclamation
- 1used to give an affirmative response: ‘Do you understand?’ ‘Yes.’
- expressing agreement with a positive statement: ‘That was a grand evening.’ ‘Yes, it was.’
- asked at the end of a statement to indicate the expectation of agreement: you think I perhaps killed Westbourne, yes?
- expressing contradiction of a negative statement: ‘You don’t want to go.’ ‘Yes, I do.’
noun ( plural yeses or yesses)

Origin:
Old English gēse, gīse, probably from an unrecorded phrase meaning 'may it be so'