This is the 2901st most frequent Japanese word.
むい
"むい" isn't a standard Japanese word; it may be a typo or abbreviation. Context is needed for clarification.
Describes a physical sensation of chill.
部屋の温度が低く、むい感じがします。
The room temperature is low, it feels chilly.
Indicates a perception of temperature in connection to the sea breeze.
風が強くて、むい海風を感じた。
The wind is strong, and I felt the cold sea breeze.
Relates to the seasonal change causing a cooler atmosphere.