WI Definition

abbreviation
West Indian.
Webster's New World
West Indies.
Webster's New World
Wisconsin.
Webster's New World

Wisconsin, a state of the United States of America.

Wiktionary
Women's Institute.
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pronoun

(Geordie) Us.

Are yee commin with wi or not?
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preposition

(Yorkshire) With.

Are tha doin' owt wi this?
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(regional) With.

Wiktionary