I haven't eaten all day, so my stomach feels totally empty.
The speaker is describing physical hunger using the sensation of a hollow stomach.
Adjective: empty
Vibe: Situation and atmosphere
Containing nothing inside, or feeling totally drained of energy, emotion, or meaning.
The milk carton in the fridge is completely empty.
You picture opening a cardboard delivery box expecting a package, but finding nothing inside but cold air, or walking through a apartment right after all the furniture has been packed into a truck.
Real-life examples
I've been working all week without a break, and I'm running on empty.
A classic everyday idiom comparing your energy levels to a car driving with a gas tank on zero.
He made a lot of big promises, but they felt kind of empty.
Used to describe words that sound good but lack real meaning, sincerity, or action behind them.
Synonyms
Contrast & nuance
'Empty' is the standard word for containing nothing. 'Vacant' usually means unoccupied by people (like a vacant lot or hotel room). 'Hollow' means having a shell outside but nothing inside. 'Bare' means stripped clean or uncovered.