noun
Literary or formal word for appetite; in everyday speech 食欲 is more common.
病後は口腹が進まない。
After the illness, I have little appetite.
noun
discrepancy between words and true feelings
Refers to saying one thing while thinking another; often used in set phrases like 口腹が違う. Rare in modern conversation.
彼の言葉は口腹が違っているように感じた。
I felt his words did not match his true feelings.