This is the 2828th most frequent Korean word.
입에
"입에" means "in the mouth" or "to the mouth" in English.
The phrase '입에 맞다' means 'to suit one's taste,' literally translating to 'fit in the mouth'.
그 음식은 입에 잘 맞아요.
The food suits my taste well.
Here, '입에' refers to 'on the mouth,' indicating physical placement.
입에 뭔가 묻어있어요.
There's something on your lips.
In this context, '입에 올리다' figuratively means 'to mention something' or 'bring it to one's lips'.