noun
Loanword from English 'wife'. Used to refer to one's own wife, often with a slightly dated or playful tone. More common in older speech or writing; modern Japanese typically uses 妻 (つま) or 奥さん (おくさん).
彼はワイフと一緒に旅行に行った。
He went on a trip with his wife.
うちのワイフがそう言ってたよ。
That's what my wife said.