also: うぃ
interjection
Casual interjection borrowed from French 'oui', used playfully or in light conversation. Often paired with ノン (non) for 'no'.
from French oui
See also: ノン
「これ、食べていい？」「ウイ、もちろん。」
"Can I eat this?" "Yes, of course."
彼女は軽くウイと答えた。
She answered with a light 'oui'.
Borrowed from French 'oui' (yes). Used as a casual, often playful interjection in Japanese.