1The desire to eat; one's appetite or interest in food, as in 「食欲がある／ない」 ("to have/not have an appetite").
最近ストレスで食欲が落ちている。
My appetite has been dropping lately due to stress.
秋になると食欲が出てくる人が多い。
Many people find their appetite picks up when autumn arrives.
このスープの香りは食欲をそそる。
The aroma of this soup is appetizing.
熱があるときは食欲がなくなるのが普通だ。
It's normal to lose your appetite when you have a fever.